User Forum

Subject :NSO    Class : Class 6
Three identical bulbs A, B and C are given. What changes occur in the brightness of bulbs A and B, when the switch S is closed? A Brightness of A increases but that of B decreases. B Brightness of A remains the same but that of B decreases. C Brightness of both A and B decreases. D Brightness of both A and B increases.

Post Your Answer