The circuit shown has 3 identical light bulbs A, B, C
and 2 identical batteries E1, E2 . When the switch is
open, A and B glow with equal brightness. When the
switch is closed:

(A) A and B will maintain their brightness and C will be
dimmer than A and B.
(B) A and B will become dimmer and C will be brighter
than A and B.
(C) A and B will maintain their brightness and C will not
glow.
(D) A, B and C will be equally bright.

manoj singh , 10 Years ago

Grade 10