alleryWhy does a bulb glow when the switch in a simple circuit is closed?
AClosing the switch completes the circuit
BClosing the switch breaks the circuit
CThe switch produces electricity
DThe bulb stores up the charge
Answer & Solution
Correct answer: A. Closing the switch completes the circuit
1. Current can flow only through an unbroken, closed conducting loop.
2. Closing the switch completes the circuit, allowing current to flow.
3. The switch does not create electricity; the cell is the source.
4. Closing it joins, not breaks, the path.
_Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit 4 Electricity "Electricity", p.62_
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