Energy and Voltage in Circuits
2 marks · EasyDescribe how you could use an LED to check if there is a current present in a circuit. Include what you would expect to see.
Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.
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Also accept: Connect an LED into the circuit. If there is a current, the LED will glow, showing current is present.
Common mistakes: Saying 'use a bulb' without mention of LED
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Marking points
B1 · 1 mark · Mentions LED is connected into the circuit.
B2 · 1 mark · States that LED glows if current is present.
Worked solution
Connect an LED into the circuit. If there is a current, the LED will glow. If no current flows, it will remain off.