Standard Science Primary 5 Systems

Which of the following materials can be used to complete a circuit to light up a bulb?

A Glass rod
B Iron nail
C Plastic ruler
D Rubber band
Show Worked Solution

Worked Solution

Step 1: Electricity only flows through closed circuits made of conductors. Step 2: Metals are generally good conductors of electricity. Step 3: An iron nail is made of metal and will allow current to flow.

Correct answer: Iron nail

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