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4.3.3 Action and use of circuit components

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Question 8

A student wants to use a low-current control circuit to switch a high-current mains appliance on and off safely. Which device should the student use to achieve this?

A

a diode

B

a relay

C

a light-dependent resistor (LDR)

D

a transformer

Markscheme

4.3.3 Action and use of circuit components Questions

  1. IGCSE
  2. /Physics
  3. /4.3.3 Action and use of circuit components

67 exam-style questions on CIE IGCSE Physics 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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