Ravi wants to complete a circuit to light up a bulb. He has a gap between two wires. Which object should he place in the gap to make the bulb light up?
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Worked Solution
Step 1: To complete the circuit, the material placed in the gap must be an electrical conductor.
Step 2: Metals are good conductors of electricity.
Step 3: Among the choices, only the iron nail is a metal.
Correct answer: Iron nail
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