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4.2.1a Positive and negative charge

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Question 46

An instructor wants to demonstrate how electrostatic charges can be produced by friction.

She holds a rod directly in her bare hand and rubs it with a woolen cloth. Four rods made of different materials are available:

  • an aluminum rod
  • an ebonite rod
  • a brass rod
  • a polythene rod

Which two rods would both be suitable to successfully demonstrate the production and retention of electrostatic charge when held and rubbed in this way?

A

an aluminum rod and a brass rod

B

an ebonite rod and a polythene rod

C

a brass rod and a polythene rod

D

a polythene rod and an aluminum rod

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4.2.1a Positive and negative charge Questions

  1. IGCSE
  2. /Physics
  3. /4.2.1a Positive and negative charge

145 exam-style questions on CIE IGCSE Physics 4.2.1a Positive and negative charge. Each one has a worked solution and a mark scheme showing where the marks go.

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