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Three identical bulbs are connected as s...

Three identical bulbs are connected as shown in fig-ure. Choose the correct statement.

A

All bulbs are in a series combination

B

If bulb R is removed, bulbs P and Q will still glow.

C

The total e.m.f in the circuit is 40 V.

D

The given circuit is a closed circuit.

Text Solution

Verified by Experts

The correct Answer is:
A
From the circuit diagram it is clear that all the single bulbs are in a series combination:
(b) If bulb R is removed from the given series combination, the remaining bulbs will not glow because it creates an open circuit. (c) The cells in the given circuit are in series with each other, and hence, the total e.m.f of this combination = (20 + 40) V = 60 V. (d) The switch S in the circuit is switched off, and hence, it is an open circuit.
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