Question

Three identical bulbs namely P, Q and R are connected to a battery as shown. What will happen 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 burn out.
• D. P will glow bright, but Q and R will be dim.

Answer 1

The correct option is D P will glow bright, but Q and R will be dim.

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 gets divided and flows 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.