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2.2 Series and parallel circuits

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Question 12

A battery-powered alarm unit contains a 15 Ω resistor connected to its battery. A technician modifies the unit by connecting a 30 Ω resistor in parallel with the 15 Ω resistor.

Which statement correctly describes the effect of this modification on the total resistance?

[1]
A

The total resistance increases to 45 Ω45\ \Omega45 Ω

B

The total resistance increases to a value between 15 Ω15\ \Omega15 Ω and 30 Ω30\ \Omega30 Ω

C

The total resistance decreases to a value below 15 Ω15\ \Omega15 Ω

D

The total resistance remains at 15 Ω15\ \Omega15 Ω

Markscheme

2.2 Series and parallel circuits Questions

  1. GCSE
  2. /Physics
  3. /2.2 Series and parallel circuits

94 exam-style questions on AQA GCSE Physics 2.2 Series and parallel circuits, covering 2.2 Series and parallel circuits. Each one has a worked solution and a mark scheme showing where the marks go.

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