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4.2 Electrical quantities

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Question 322

A student wants to demonstrate the charging of materials by friction. They hold a rod in their hand and rub it with a piece of woolen cloth.

The following rods are available:

  • an aluminum rod
  • an iron rod
  • a polythene rod
  • a perspex rod

Which two rods would both be suitable to successfully demonstrate the retention of electrostatic charge on the rod?

A

an aluminum rod and a polythene rod

B

a polythene rod and a perspex rod

C

a perspex rod and an iron rod

D

an iron rod and an aluminum rod

Markscheme

4.2 Electrical quantities Questions

  1. IGCSE
  2. /Physics
  3. /4.2 Electrical quantities

452 exam-style questions on CIE IGCSE Physics 4.2 Electrical quantities, covering 4.2.1a Positive and negative charge, 4.2.1b Charging by friction and detecting charge, 4.2.1c Electrical conductors and insulators, 4.2.1d Electric fields and electric field patterns, 4.2.2a Electric current, charge and measuring current, 4.2.2b Conduction in metals and the direction of current, 4.2.2c Direct current and alternating current, 4.2.3a Electromotive force, 4.2.3b Potential difference and voltmeters, 4.2.4a Resistance, 4.2.4b Resistance of a metallic wire, 4.2.4c Current–voltage graphs, and 4.2.5 Electrical energy and electrical power. Each one has a worked solution and a mark scheme showing where the marks go.

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