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2.2 Series and parallel circuits

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Question 12

An electronic timer contains a 2.0 kΩ2.0\ \text{k}\Omega2.0 kΩ resistor and a 4.0 kΩ4.0\ \text{k}\Omega4.0 kΩ resistor connected in series. A third resistor is added in series while the supply potential difference remains constant. The available resistors have resistances of 2.0 kΩ2.0\ \text{k}\Omega2.0 kΩ, 3.0 kΩ3.0\ \text{k}\Omega3.0 kΩ, 6.0 kΩ6.0\ \text{k}\Omega6.0 kΩ and 9.0 kΩ9.0\ \text{k}\Omega9.0 kΩ.

Which resistor should be added so that the current becomes two-thirds of its original value?

[1]
A

The 2.0 kΩ2.0\ \text{k}\Omega2.0 kΩ resistor

B

The 6.0 kΩ6.0\ \text{k}\Omega6.0 kΩ resistor

C

The 9.0 kΩ9.0\ \text{k}\Omega9.0 kΩ resistor

D

The 3.0 kΩ3.0\ \text{k}\Omega3.0 kΩ resistor

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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