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A circuit diagram is shown here. Which o...

A circuit diagram is shown here. Which of the switches must be closed so that only bulb 2 lights up?

A

P, R and T only

B

R and T only

C

R, S and T only

D

P, Q, R, S and T

Text Solution

Verified by Experts

The correct Answer is:
A
Bulb will glow when current is passed through it. Switches P, R and T must be closed so that current will get a closed path through bulb 2 only and bulb 2 will light up.
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