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2.1 Current, potential difference and resistance

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Question 1

A technician tests a low-voltage power supply using two identical 18 Ω load resistors. The resistors are connected to the 9.0 V supply. The current from the supply is 1.0 A.

a.

Calculate the total resistance of the combination.

[2]
b.

State how the two resistors are connected.

[1]
c.

The two resistors are reconnected using the other arrangement. The potential difference of the supply remains 9.0 V.

Calculate the current from the supply.

[3]
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.

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