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Question
In a simple circuit, why does the bulb glow when you close the switch?
Options
The switch produces electricity.
Closing the switch completes the circuit.
Closing the switch breaks the circuit.
The bulb is getting charged.
Solution
Closing the switch completes the circuit.
Explanation:
When you close the switch in a simple circuit:
- It completes the path for the electric current to flow.
- The electric current flows from the power source (like a battery), through the wires, the switch, and the bulb.
- The filament in the bulb heats up due to the flow of current, and as a result, the bulb glows.
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