Physics 0625 · IGCSE · Electric circuits

Electric circuits — practice question

The diagram illustrates a motor and a light-dependent resistor (LDR) arranged in a circuit. Which change reduces the current in the motor so that it rotates more slowly?

  • Aconnecting a resistor in parallel with the LDR
  • Bconnecting a resistor in series with the LDR
  • Cexchanging the positions of the motor and the LDR in the circuit
  • Dincreasing the brightness of the light falling on the LDR

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