Skip to content

Course home

Sign up

2.1 Current, potential difference and resistance

EasyMediumHard
123456789101112131415161718
Question 5

A fixed resistor is used in a railway signal control unit. The resistor is kept at constant temperature.

An increase of 5.0 V in the potential difference across the resistor causes the current through it to increase by 0.20 A.

What is the resistance of the resistor?

[1]
A

1.0 Ω1.0\ \Omega1.0 Ω

B

25 Ω25\ \Omega25 Ω

C

5.2 Ω5.2\ \Omega5.2 Ω

D

0.040 Ω0.040\ \Omega0.040 Ω

Markscheme

2.1 Current, potential difference and resistance Questions

  1. GCSE
  2. /Physics
  3. /2.1 Current, potential difference and resistance

82 exam-style questions on AQA GCSE Physics 2.1 Current, potential difference and resistance, covering 2.1.1 Standard circuit diagram symbols, 2.1.2 Electrical charge and current, 2.1.3 Current, resistance and potential difference, and 2.1.4 Resistors. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank