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4.3 Electric circuits

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Question 41

A diode is connected in an electrical circuit.

What is the primary function of a diode?

A

to allow current to flow in only one direction

B

to increase the voltage of a direct current source

C

to break the circuit if the current exceeds a safe limit

D

to store electrical energy in an electrostatic field

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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