TopicalPhysics 9702Electric fieldsElectric fields and field linesPaper 1

Electric fields and field lines — Paper 1 · A Level Physics 9702

18.1· 48 questions · 48 marks · 58 min · 2004–2021· Multiple choice

Every Cambridge A Level Physics Paper 1 question on electric fields and field lines, laid out as 21 A4 pages with the mark scheme below. Nothing is left out. Free to read, no account.

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Questions21 pages

Question 1: Two parallel, conducting plates with air between them are placed close to one another. The top plate is given a negative charge and the bot…Question 2: Two parallel metal plates are at potentials of +800 V and +1300 V. Which diagram best shows the electric field between the metal plates? A …1 / 21
Question 3: Which diagram shows the electric field pattern of an isolated negative point charge? A B C D – – – –Question 4: Which diagram represents the electric field of a negative point charge, shown by • ? A B C DQuestion 5: A particle is in a uniform field. The particle experiences a force in the opposite direction to the field. Which field is the particle in, …2 / 21
Question 6: The diagram shows the electric field near a point charge and two electrons X and Y. Y X Which row describes the forces acting on X and Y? d…Question 7: A small charge q is placed in the electric field of a large charge Q. Both charges experience a force F. What is the electric field strengt…3 / 21
Question 8: A potential difference is applied between two metal plates that are not parallel. Which diagram shows the electric field between the plates…4 / 21
Question 9: In each electric field diagram, a positively charged particle is moved from X to Y. In which diagram would the particle experience an incre…5 / 21
Question 10: A potential difference is applied between two metal plates that are not parallel. Which diagram shows the electric field between the plates…Question 11: The diagram shows a non-uniform electric field near a positively charged and a negatively charged sphere. Four electrons, A, B, C and D, ar…6 / 21
Question 12: A particle is in a uniform field. The particle experiences a force in the opposite direction to the field. Which field is the particle in, …Question 13: A particle is in a uniform field. The particle experiences a force in the opposite direction to the field. Which field is the particle in, …Question 14: A small charge q is placed in the electric field of a large charge Q. Both charges experience a force F. What is the electric field strengt…7 / 21
Question 15: Two positive charges and one negative charge, all of equal magnitude, are set at the corners of an equilateral triangle. Which diagram best…Question 16: What is equivalent to the unit of electric field strength? A J C m–1 B N s A–1 C kg m s–3 A–1 D kg m3 s–3 A–1Question 17: Regions of unbalanced charge are produced inside a cloud as shown. + + + – – – X For the region X, which diagram correctly represents the d…8 / 21
Question 18: A positive charge and a negative charge of equal magnitude are placed a short distance apart. Which diagram best represents the associated …Question 19: Which diagram best represents the electric field between two point charges of equal magnitude and opposite sign? A B C D + + + + – – – –9 / 21
Question 20: A potential difference is applied between two metal plates that are not parallel. Which diagram shows the electric field between the plates…Question 21: Which diagram could represent the electric field lines between two oppositely charged conducting surfaces? A B C D10 / 21
Question 22: Which diagram shows the pattern of the electric field between a positively charged metal sphere and a negatively charged metal plate? A B +…Question 23: Which diagram shows the electric field pattern of an isolated negative point charge? A B C D – – – –Question 24: Which path shows a possible movement of an electron in the electric field shown? A B path of electron D C11 / 21
Question 25: The diagram shows an electric field pattern caused by two positive and two negative point charges of equal magnitude placed at the four cor…Question 26: Which path shows a possible movement of an electron in the electric field shown? A B path of electron D CQuestion 27: The diagram shows an electric field pattern caused by two positive and two negative point charges of equal magnitude placed at the four cor…12 / 21
Question 28: Two positive charges and one negative charge, all of equal magnitude, are set at the corners of an equilateral triangle. Which diagram best…Question 29: Which diagram best illustrates the electric field around a positive point charge? A B C D + + + +13 / 21
Question 30: A dipole is a pair of charges of equal magnitude, one negative and one positive. The electric field of a dipole is shown below. In which di…Question 31: The diagram shows the electric field near a positively charged sphere and a negatively charged sphere. Four electrons A, B, C and D are sho…14 / 21
Question 32: Four diagrams representing the electric field between two oppositely-charged point charges are shown. Which diagram correctly shows the ele…Question 33: A charged particle is placed in a uniform field of force. The direction of the force on the particle is opposite to the direction of the fi…Question 34: Which diagram shows the electric field lines surrounding an isolated negative point charge? A B C D – – – –15 / 21
Question 35: A flat plate is positively charged and a curved plate is negatively charged. Which diagram shows the electric field lines between the two p…Question 36: Two parallel metal plates are at electric potentials of +800 V and +1300 V. Which diagram best represents the electric field between the me…16 / 21
Question 37: Which diagram shows the pattern of the electric field lines due to a negative point charge? A B C DQuestion 38: Which diagram represents the electric field line pattern due to a combination of two positive charges? A B C DQuestion 39: P is a point near to charge X as shown. X P When a negatively charged test charge is placed at point P, it is found to experience a force o…17 / 21
Question 40: The diagram shows the electric field pattern between two opposite and unequal point charges P and Q. P P Q Q Which statement about the char…Question 41: A particle is in a uniform field. The particle experiences a force in the opposite direction to the field. In which type of field is the pa…18 / 21
Question 42: Two positive charges and one negative charge, all of equal magnitude, are set at the corners of an equilateral triangle. Which diagram repr…Question 43: A small charge q is placed in the electric field of a large charge Q. Both charges experience a force F. What is the electric field strengt…19 / 21
Question 44: A dipole is a pair of charges of equal magnitude, one negative and one positive. The electric field of a dipole is shown below. In which di…Question 45: Which diagram best represents the electric field between two point charges of equal magnitude and opposite sign? A B C D + + + + – – – –20 / 21
Question 46: The diagram shows the electric field near a positively charged sphere and a negatively charged sphere. Four electrons A, B, C and D are sho…Question 47: Which diagram best represents the field lines in the electric field produced by a combination of one point positive charge and one point ne…Question 48: What is meant by electric field strength? A force per unit charge acting on a small mass B force per unit charge acting on a small positive…21 / 21

Mark scheme48 answers

Answers below. Sit the paper first if you are practising.

Pastlit

Physics 9702 · Electric fields and field lines — Paper 1

A Level · topical answer key — answer key (teacher use)

Question

Answer

Marks

1A1
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29C1
30D1
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All of Electric fields

Questions as text

Q1 · Two parallel, conducting plates with air between them are placed close to one another 9702/11 Oct/Nov 2004

29 Two parallel, conducting plates with air between them are placed close to one another. The top plate is given a negative charge and the bottom one is earthed. Which diagram best represents the distribution of charges and the field in this situation? A B _ _ _ _ _ _ _ _ _ _ _ _ _ _ + + + + + + + C D _ _ _ _ _ _ _ _ _ _ _ _ _ _ + + + + + + +

1 marks

Answer: A

This question in 9702/11 Oct/Nov 2004

Q2 · Two parallel metal plates are at potentials of +800 V and +1300 V 9702/11 May/June 2006

29 Two parallel metal plates are at potentials of +800 V and +1300 V. Which diagram best shows the electric field between the metal plates? A B +800 V +1300 V +800 V +1300 V C D +800 V +1300 V +800 V +1300 V

1 marks

Answer: B

This question in 9702/11 May/June 2006

Q3 · Which diagram shows the electric field pattern of an isolated negative point charge? 9702/11 Oct/Nov 2006

29 Which diagram shows the electric field pattern of an isolated negative point charge? A B C D – – – –

1 marks

Answer: B

This question in 9702/11 Oct/Nov 2006

Q4 · Which diagram represents the electric field of a negative point charge, shown by • ? 9702/11 May/June 2007

28 Which diagram represents the electric field of a negative point charge, shown by • ? A B C D

1 marks

Answer: D

This question in 9702/11 May/June 2007

Q5 · A particle is in a uniform field 9702/11 Oct/Nov 2008

13 A particle is in a uniform field. The particle experiences a force in the opposite direction to the field. Which field is the particle in, and on which property of the particle is the field acting? property of particle field on which the field acts A electric charge B electric current C gravitational mass D gravitational weight

1 marks

Answer: A

This question in 9702/11 Oct/Nov 2008

Q6 · The diagram shows the electric field near a point charge and two electrons X and Y 9702/11 Oct/Nov 2008

29 The diagram shows the electric field near a point charge and two electrons X and Y. Y X Which row describes the forces acting on X and Y? direction of force magnitude of force on X A radially inwards less than force on Y B radially inwards greater than force on Y C radially outwards less than force on Y D radially outwards greater than force on Y

1 marks

Answer: B

This question in 9702/11 Oct/Nov 2008

Q7 · A small charge q is placed in the electric field of a large charge Q 9702/12 Oct/Nov 2009

26 A small charge q is placed in the electric field of a large charge Q. Both charges experience a force F. What is the electric field strength of the charge Q at the position of the charge q? F F F A B C FqQ D Qq Q q

1 marks

Answer: D

This question in 9702/12 Oct/Nov 2009

Q8 · A potential difference is applied between two metal plates that are not parallel 9702/11 May/June 2011

28 A potential difference is applied between two metal plates that are not parallel. Which diagram shows the electric field between the plates? A B + – + – C D + – + – Space for working

1 marks

Answer: A

This question in 9702/11 May/June 2011

Q9 · In each electric field diagram, a positively charged particle is moved from X to Y 9702/12 May/June 2011

31 In each electric field diagram, a positively charged particle is moved from X to Y. In which diagram would the particle experience an increasing repulsive force? A B Y X X Y C D X Y Y X

1 marks

Answer: B

This question in 9702/12 May/June 2011

Q10 · A potential difference is applied between two metal plates that are not parallel 9702/13 May/June 2011

29 A potential difference is applied between two metal plates that are not parallel. Which diagram shows the electric field between the plates? A B + – + – C D + – + – Space for working

1 marks

Answer: A

This question in 9702/13 May/June 2011

Q11 · The diagram shows a non-uniform electric field near a positively charged and a negatively… 9702/12 Oct/Nov 2011

31 The diagram shows a non-uniform electric field near a positively charged and a negatively charged sphere. Four electrons, A, B, C and D, are shown at different positions in the field. On which electron is the direction of the force on the electron shown correctly? B D + – C A

1 marks

Answer: A

This question in 9702/12 Oct/Nov 2011

Q12 · A particle is in a uniform field 9702/11 Oct/Nov 2013

13 A particle is in a uniform field. The particle experiences a force in the opposite direction to the field. Which field is the particle in, and on which property of the particle is the field acting? property of particle field on which the field acts A electric charge B electric current C gravitational mass D gravitational weight

1 marks

Answer: A

This question in 9702/11 Oct/Nov 2013

Q13 · A particle is in a uniform field 9702/12 Oct/Nov 2013

13 A particle is in a uniform field. The particle experiences a force in the opposite direction to the field. Which field is the particle in, and on which property of the particle is the field acting? property of particle field on which the field acts A electric charge B electric current C gravitational mass D gravitational weight

1 marks

Answer: A

This question in 9702/12 Oct/Nov 2013

Q14 · A small charge q is placed in the electric field of a large charge Q 9702/13 Oct/Nov 2013

31 A small charge q is placed in the electric field of a large charge Q. Both charges experience a force F. What is the electric field strength of the charge Q at the position of the charge q? F F F A B C FqQ D Qq Q q

1 marks

Answer: D

This question in 9702/13 Oct/Nov 2013

Q15 · Two positive charges and one negative charge, all of equal magnitude, are set at the… 9702/12 May/June 2014

28 Two positive charges and one negative charge, all of equal magnitude, are set at the corners of an equilateral triangle. Which diagram best represents the electric field surrounding the charges? A B – – + + + + C D – – + + + + Space for working

1 marks

Answer: A

This question in 9702/12 May/June 2014

Q16 · What is equivalent to the unit of electric field strength? 9702/12 Oct/Nov 2014

2 What is equivalent to the unit of electric field strength? A J C m–1 B N s A–1 C kg m s–3 A–1 D kg m3 s–3 A–1

1 marks

Answer: C

This question in 9702/12 Oct/Nov 2014

Q17 · Regions of unbalanced charge are produced inside a cloud as shown 9702/13 Oct/Nov 2014

31 Regions of unbalanced charge are produced inside a cloud as shown. + + + – – – X For the region X, which diagram correctly represents the direction of the electric field and the initial direction in which electrons would move? A B C D electric field direction of movement of electrons

1 marks

Answer: D

This question in 9702/13 Oct/Nov 2014

Q18 · A positive charge and a negative charge of equal magnitude are placed a short distance… 9702/12 May/June 2015

29 A positive charge and a negative charge of equal magnitude are placed a short distance apart. Which diagram best represents the associated electric field? A B + – + – C D + – + –

1 marks

Answer: B

This question in 9702/12 May/June 2015

Q19 · Which diagram best represents the electric field between two point charges of equal… 9702/13 May/June 2015

31 Which diagram best represents the electric field between two point charges of equal magnitude and opposite sign? A B C D + + + + – – – –

1 marks

Answer: D

This question in 9702/13 May/June 2015

Q20 · A potential difference is applied between two metal plates that are not parallel 9702/12 Oct/Nov 2015

31 A potential difference is applied between two metal plates that are not parallel. Which diagram shows the electric field between the plates? A B + – + – C D + – + –

1 marks

Answer: A

This question in 9702/12 Oct/Nov 2015

Q21 · Which diagram could represent the electric field lines between two oppositely charged… 9702/11 May/June 2016

29 Which diagram could represent the electric field lines between two oppositely charged conducting surfaces? A B C D

1 marks

Answer: D

This question in 9702/11 May/June 2016

Q22 · Which diagram shows the pattern of the electric field between a positively charged metal… 9702/12 May/June 2016

29 Which diagram shows the pattern of the electric field between a positively charged metal sphere and a negatively charged metal plate? A B + + – – – – – – – – C D + + – – – – – – – –

1 marks

Answer: B

This question in 9702/12 May/June 2016

Q23 · Which diagram shows the electric field pattern of an isolated negative point charge? 9702/13 May/June 2016

29 Which diagram shows the electric field pattern of an isolated negative point charge? A B C D – – – –

1 marks

Answer: D

This question in 9702/13 May/June 2016

Q24 · Which path shows a possible movement of an electron in the electric field shown? 9702/11 Oct/Nov 2016

30 Which path shows a possible movement of an electron in the electric field shown? A B path of electron D C

1 marks

Answer: A

This question in 9702/11 Oct/Nov 2016

Q25 · The diagram shows an electric field pattern caused by two positive and two negative point… 9702/11 Oct/Nov 2016

31 The diagram shows an electric field pattern caused by two positive and two negative point charges of equal magnitude placed at the four corners of a square. In which direction does the force act on an electron at point X? + – A B X D C – +

1 marks

Answer: B

This question in 9702/11 Oct/Nov 2016

Q26 · Which path shows a possible movement of an electron in the electric field shown? 9702/13 Oct/Nov 2016

30 Which path shows a possible movement of an electron in the electric field shown? A B path of electron D C

1 marks

Answer: A

This question in 9702/13 Oct/Nov 2016

Q27 · The diagram shows an electric field pattern caused by two positive and two negative point… 9702/13 Oct/Nov 2016

31 The diagram shows an electric field pattern caused by two positive and two negative point charges of equal magnitude placed at the four corners of a square. In which direction does the force act on an electron at point X? + – A B X D C – +

1 marks

Answer: B

This question in 9702/13 Oct/Nov 2016

Q28 · Two positive charges and one negative charge, all of equal magnitude, are set at the… 9702/12 Feb/March 2017

30 Two positive charges and one negative charge, all of equal magnitude, are set at the corners of an equilateral triangle. Which diagram best represents the electric field surrounding the charges? A B – – + + + + C D – – + + + +

1 marks

Answer: A

This question in 9702/12 Feb/March 2017

Q29 · Which diagram best illustrates the electric field around a positive point charge? 9702/12 May/June 2017

30 Which diagram best illustrates the electric field around a positive point charge? A B C D + + + +

1 marks

Answer: C

This question in 9702/12 May/June 2017

Q30 · A dipole is a pair of charges of equal magnitude, one negative and one positive 9702/13 May/June 2017

29 A dipole is a pair of charges of equal magnitude, one negative and one positive. The electric field of a dipole is shown below. In which direction does the force act on an electron when at point X? X A D B C – +

1 marks

Answer: D

This question in 9702/13 May/June 2017

Q31 · The diagram shows the electric field near a positively charged sphere and a negatively… 9702/13 Oct/Nov 2017

31 The diagram shows the electric field near a positively charged sphere and a negatively charged sphere. Four electrons A, B, C and D are shown at different positions in the field. On which electron is the direction of the force on the electron shown correctly? B D + – C A

1 marks

Answer: A

This question in 9702/13 Oct/Nov 2017

Q32 · Four diagrams representing the electric field between two oppositely-charged point… 9702/12 May/June 2018

31 Four diagrams representing the electric field between two oppositely-charged point charges are shown. Which diagram correctly shows the electric field lines? A B + – + – C D + – + –

1 marks

Answer: A

This question in 9702/12 May/June 2018

Q33 · A charged particle is placed in a uniform field of force 9702/11 Oct/Nov 2018

10 A charged particle is placed in a uniform field of force. The direction of the force on the particle is opposite to the direction of the field. What is the field and what is the charge on the particle? field charge on particle A electric negative B electric positive C gravitational negative D gravitational positive

1 marks

Answer: A

This question in 9702/11 Oct/Nov 2018

Q34 · Which diagram shows the electric field lines surrounding an isolated negative point… 9702/11 Oct/Nov 2018

30 Which diagram shows the electric field lines surrounding an isolated negative point charge? A B C D – – – –

1 marks

Answer: B

This question in 9702/11 Oct/Nov 2018

Q35 · A flat plate is positively charged and a curved plate is negatively charged 9702/12 Oct/Nov 2018

31 A flat plate is positively charged and a curved plate is negatively charged. Which diagram shows the electric field lines between the two plates? A B + + + + + + – – – – – – C D + + + + + + – – – – – –

1 marks

Answer: C

This question in 9702/12 Oct/Nov 2018

Q36 · Two parallel metal plates are at electric potentials of +800 V and +1300 V 9702/13 Oct/Nov 2018

30 Two parallel metal plates are at electric potentials of +800 V and +1300 V. Which diagram best represents the electric field between the metal plates? A B +800 V +1300 V +800 V +1300 V C D +800 V +1300 V +800 V +1300 V

1 marks

Answer: B

This question in 9702/13 Oct/Nov 2018

Q37 · Which diagram shows the pattern of the electric field lines due to a negative point… 9702/11 May/June 2019

31 Which diagram shows the pattern of the electric field lines due to a negative point charge? A B C D

1 marks

Answer: A

This question in 9702/11 May/June 2019

Q38 · Which diagram represents the electric field line pattern due to a combination of two… 9702/13 May/June 2019

31 Which diagram represents the electric field line pattern due to a combination of two positive charges? A B C D

1 marks

Answer: D

This question in 9702/13 May/June 2019

Q39 · P is a point near to charge X as shown 9702/12 Oct/Nov 2019

29 P is a point near to charge X as shown. X P When a negatively charged test charge is placed at point P, it is found to experience a force of repulsion from X that is radially away from X. Which arrow correctly shows the direction of the electric field at point P due to the charge X? A B C D

1 marks

Answer: C

This question in 9702/12 Oct/Nov 2019

Q40 · The diagram shows the electric field pattern between two opposite and unequal point… 9702/13 Oct/Nov 2019

31 The diagram shows the electric field pattern between two opposite and unequal point charges P and Q. P P Q Q Which statement about the charges is correct? A P is negatively charged and has a smaller charge than Q. B P is negatively charged and has a greater charge than Q. C P is positively charged and has a smaller charge than Q. D P is positively charged and has a greater charge than Q.

1 marks

Answer: D

This question in 9702/13 Oct/Nov 2019

Q41 · A particle is in a uniform field 9702/12 Feb/March 2020

11 A particle is in a uniform field. The particle experiences a force in the opposite direction to the field. In which type of field is the particle, and on which property of the particle is the field acting? property of particle type of field on which the field acts A electric charge B electric current C gravitational mass D gravitational weight

1 marks

Answer: A

This question in 9702/12 Feb/March 2020

Q42 · Two positive charges and one negative charge, all of equal magnitude, are set at the… 9702/12 Feb/March 2020

30 Two positive charges and one negative charge, all of equal magnitude, are set at the corners of an equilateral triangle. Which diagram represents the electric field surrounding the charges? A B – – + + + + C D – – + + + +

1 marks

Answer: A

This question in 9702/12 Feb/March 2020

Q43 · A small charge q is placed in the electric field of a large charge Q 9702/11 May/June 2020

31 A small charge q is placed in the electric field of a large charge Q. Both charges experience a force F. What is the electric field strength of the charge Q at the position of the charge q? F F F A B C FqQ D Qq Q q

1 marks

Answer: D

This question in 9702/11 May/June 2020

Q44 · A dipole is a pair of charges of equal magnitude, one negative and one positive 9702/12 May/June 2020

31 A dipole is a pair of charges of equal magnitude, one negative and one positive. The electric field of a dipole is shown below. In which direction does the force act on an electron when at point X? X A D B C – +

1 marks

Answer: D

This question in 9702/12 May/June 2020

Q45 · Which diagram best represents the electric field between two point charges of equal… 9702/13 May/June 2020

31 Which diagram best represents the electric field between two point charges of equal magnitude and opposite sign? A B C D + + + + – – – –

1 marks

Answer: D

This question in 9702/13 May/June 2020

Q46 · The diagram shows the electric field near a positively charged sphere and a negatively… 9702/11 Oct/Nov 2020

30 The diagram shows the electric field near a positively charged sphere and a negatively charged sphere. Four electrons A, B, C and D are shown at different positions in the field. On which electron is the direction of the force on the electron shown correctly? B D + – C A

1 marks

Answer: A

This question in 9702/11 Oct/Nov 2020

Q47 · Which diagram best represents the field lines in the electric field produced by a… 9702/12 Feb/March 2021

30 Which diagram best represents the field lines in the electric field produced by a combination of one point positive charge and one point negative charge? A B + – + – C D + – + –

1 marks

Answer: B

This question in 9702/12 Feb/March 2021

Q48 · What is meant by electric field strength? 9702/11 Oct/Nov 2021

30 What is meant by electric field strength? A force per unit charge acting on a small mass B force per unit charge acting on a small positive charge C force per unit mass acting on a small mass D force per unit mass acting on a small positive charge

1 marks

Answer: B

This question in 9702/11 Oct/Nov 2021