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Three identical bulbs P, Q and R are con...


Three identical bulbs P, Q and R are connected to a battery as shown in the figure. When the circuit is closed.

A

R will glow bright but Q and P will be dim.

B

P, Q and R all will glow equally bright

C

Q and R will immediately burnout.

D

P will glow bright, but Q and R will be dim

Text Solution

Verified by Experts

The correct Answer is:
D
When the circuit is closed, an electric current starts flowing in the circuit from the positive terminal of battery. The current which passes through bulb P is the sum of current flowing in bulbs Q and R. As the brightness depends upon the current flowing through the bulb, so P will be bright but Q and R will be dim.
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