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4.3 Electric circuits

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Question 18

Which circuit includes a thermistor, and how does the resistance of the thermistor change as the temperature increases?

A

Circuit: automatic street light; Change in resistance: increases

B

Circuit: automatic street light; Change in resistance: decreases

C

Circuit: fire alarm; Change in resistance: increases

D

Circuit: fire alarm; Change in resistance: decreases

Markscheme

4.3 Electric circuits Questions

  1. IGCSE
  2. /Physics
  3. /4.3 Electric circuits

136 exam-style questions on CIE IGCSE Physics 4.3 Electric circuits, covering 4.3.1a Circuit diagrams and circuit components, 4.3.2a Series circuits, 4.3.2b Parallel circuits, 4.3.2c Current and potential difference in circuits, 4.3.2d Combined resistance of resistors in parallel, and 4.3.3 Action and use of circuit components. Each one has a worked solution and a mark scheme showing where the marks go.

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