Physics
A switch in a table lamp is connected in the neutral wire. The lamp works fine. Identify the correct statement :
- Current flow stops when switch is off, it is safe.
- It is safe because neutral wire is at zero potential.
- It is unsafe as switch gets heated.
- It is unsafe as lamp body is connected to the live wire.
Household Circuits
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Answer
It is unsafe as lamp body is connected to the live wire.
Reason — When the switch is placed in the neutral wire, switching it off only breaks the neutral connection, while the live wire remains connected to the lamp.
As a result, the lamp parts can still be at live potential, posing a risk of electric shock even when the lamp appears to be off.
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