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2.1 Current, potential difference and resistance

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Question 13

A circuit contains two fixed resistors, P and Q, connected in series to a 15 V supply. Resistor P has a resistance of 10 Ω and resistor Q has a resistance of 20 Ω. The resistances remain constant.

a.

Calculate the current in the circuit.

[2]
b.

Calculate the potential difference across resistor Q.

[2]
c.

Resistor Q is replaced by a resistor with a resistance of 5.0 Ω. Calculate the new current in the circuit.

[2]
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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