Skip to content

Course home

Sign up

4.3.3 Action and use of circuit components

EasyMediumHard
12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758
Question 16

A light-dependent resistor (LDR) is used in a circuit to control a piece of equipment automatically.

What might this circuit be used for?

A

switching on a room heater when the temperature falls

B

turning on street lights automatically as it becomes dark

C

sounding an alert when a safe door is opened

D

activating a garden sprinkler system at a pre-determined time

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.

Question bank