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What happens to the brightness of the la...

What happens to the brightness of the lamp when the switch S is closed?

A

It becomes dimmer.

B

It becomes brighter.

C

It goes off.

D

It remains the same.

Text Solution

Verified by Experts

The correct Answer is:
B
When switch S is closed, no current passes through R, so net resistance of the circuit decreases. Hence, the lamp becomes brighter.
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