Grade 10 Physical Sciences · Paper 1 (Physics)

Electricity and Magnetism Grade 10

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Question 1.7 · November 2023 · Paper 1 · National (DBE) · 2 marks

Various options are provided as possible answers to the following questions. Each question has only ONE correct answer.

1.7 Refer to the diagram below.

Q and R are small spheres suspended by light insulated strings.

When a negatively charged rod is brought close to sphere Q, sphere Q is repelled. When the negatively charged rod is brought close to sphere R, sphere R is attracted.

Which ONE of the combinations below can be possible for the nature of the charges on spheres Q and R?(2) Diagram for question 1.7

A Sphere Q: Negative; Sphere R: Negative
B Sphere Q: Positive; Sphere R: Neutral
C Sphere Q: Neutral; Sphere R: Positive
D Sphere Q: Negative; Sphere R: Neutral

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What's in Electricity and Magnetism Grade 10

Each skill is one thing a memo gives a tick for. Tap a skill for its own questions, notes and videos.

Magnetism

Describe and draw magnetic fieldsDescribe magnetic poles and fields, and draw field lines around magnets (field lines go from north to south outside a bar magnet).3 videos

Electrostatics22 past paper questions

Electric Circuits28 past paper questions

More Electricity and Magnetism Grade 10 questions and answers

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1. Question 1.7 · November 2022 · Paper 1 · Provincial · 2 marks
Four options are provided as possible answers to the following questions. Each question has only ONE correct answer.
1.7 Consider the circuit diagram below:

What is the voltage across the parallel resistors?(2)
1. A 5V
2. B 7V
3. C 2V
4. D 4V
Show the memo (1 tick)Memo
1. ✓
  Choose the correct optionIn series the potential differences add up to the battery voltage: $7 = 4 + V_{∥} + 1$ , so $V_{∥} = 7 - 4 - 1 = 2$ V. All the parallel resistors share this same 2 V.
  
  Answer: C
  2 marks · Use series and parallel circuit rules
2. Question 7.1 · November 2022 · Paper 1 · Provincial · 2 marks
Two identical insulated spheres, A and B, suspended by a light inextensible string from a ceiling, are held a distance apart, as shown below.

Sphere A carries a charge of $+ 2$ nC, while sphere B is neutral.
7.1 Explain what is meant by neutral charge.(2)
Show the memo (1 tick)Memo
1. ✓
  Meaning of neutralNeutral charge – an atom that has equal number of electrons and protons.
  2 marks · Explain charging and polarisation
3. Question WE1 · Siyavula Grade 10 Physical Sciences, 17.2 Current, Worked example 1 · 2 marks
WE1 An amount of charge equal to $45$ C moves past a point in a circuit in $1$ second, what is the current in the circuit?(2)
Show the memo (2 ticks)Memo
1. ✓
  Formula and substitution $I = \frac{Q}{Δ t} = \frac{45 C}{1 s}$
  1 mark · Calculate current or voltage from charge
2. ✓
  Answer $I = 45 C \cdotp s^{- 1} = 45$ A
  1 mark · Calculate current or voltage from charge
4. Question WE1 · Siyavula Grade 10 Physical Sciences, 16.2 Two kinds of charge, Worked example 1 · 3 marks
WE1 If you have a cotton cloth and a silk cloth and you rub them together, which becomes negatively charged? Use the tribo-electric series below.(3)
Show the memo (3 ticks)Memo
1. ✓
  Position in the seriesSilk is above cotton in the tribo-electric series, so silk is more positive in the series than cotton.
  1 mark · Explain charging and polarisation
2. ✓
  Electron transferWhen two materials are rubbed, the more negative one in the series gains electrons and the more positive one loses electrons: silk loses electrons and cotton gains electrons.
  1 mark · Explain charging and polarisation
3. ✓
  AnswerThe cotton gains electrons, so it has an excess of electrons and becomes negatively charged.
  1 mark · Explain charging and polarisation
5. Question WE2 · Siyavula Grade 10 Physical Sciences, 17.2 Current, Worked example 2 · 2 marks
WE2 An amount of charge equal to $53$ C moves past a fixed point in a circuit in $2$ s, what is the current in the circuit?(2)
Show the memo (2 ticks)Memo
1. ✓
  Formula and substitution $I = \frac{Q}{Δ t} = \frac{53 C}{2 s}$
  1 mark · Calculate current or voltage from charge
2. ✓
  Answer $I = 26, 5$ A
  1 mark · Calculate current or voltage from charge

Electricity and Magnetism Grade 10 videos

Short lessons from South African teachers first. Videos load only when you tap play, to save your data.

GCSE Physics - What Are Magnets? How to Draw Magnetic Field LinesCognito

Polarisation of Charge: Electrostatic InductionMindset

Grade 10 - Electrostatics | Conservation of Charge | Mlungisi NkosiMlungisi Nkosi Maths & Science

Ohm's Law Grade 11 Electric Circuits (Electricity grade 11 & 12)Miss Martins Maths and Science

What is electrical resistance? - Electricity Explained - (4)Into The Ordinary

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