Skip to content

Course home

Sign up

2.1 Current, potential difference and resistance

EasyMediumHard
12345678910111213141516171819202122232425262728293031
Question 18

A fixed resistor in an aquarium pump controller has a resistance of 3.0 kΩ3.0\ \text{k}\Omega3.0 kΩ. The potential difference across the resistor is 7.5 V. What is the expected reading on an ammeter connected in series with the resistor?

[1]
A

0.40 mA0.40\ \text{mA}0.40 mA

B

22.5 mA22.5\ \text{mA}22.5 mA

C

2.5 A2.5\ \text{A}2.5 A

D

2.5 mA2.5\ \text{mA}2.5 mA

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