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4.3 Electric circuits

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Question 79

Which circuit typically includes a light-dependent resistor (LDR) and how does its resistance change as the light level increases?

A

Circuit: Automatic street light; Resistance: Increases

B

Circuit: Automatic street light; Resistance: Decreases

C

Circuit: Temperature sensor; Resistance: Increases

D

Circuit: Temperature sensor; 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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