Question

Two light bulbs shown in the circuit have ratings A(24 V, 24 W) and B (24 V and 36 W) as shown in Fig. When the switch is closed

(A) the intensity of light bulb A increases 

(B) the intensity of light bulb A decreases 

(C) the intensity of light bulb B increases 

(D) the intensity of light bulb B decreases

Answer 1

Correct option B, C

Explanation:

R_A R_B. Initially potential difference across A is more. When switch is closed potential difference across A and B are equal.