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4.2 Electrical quantities

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Question 261

This question is about the potential difference (p.d.) across, and the current in, a variable resistor.

The resistance of the variable resistor is decreased.

Which statement is correct?

A

The current can remain constant if the p.d. is increased.

B

The current can remain constant if the p.d. is decreased.

C

The p.d. can remain constant if the current is decreased.

D

The p.d. can remain constant if the current is kept constant.

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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