Circuit Analysis with Identical Bulbs · CAP 2009 #4
Physics · electromagnetism
Problem
In the two circuits shown above, the batteries are identical and maintain constant voltage. The light bulbs A, B, C and D, are identical and have resistance R. Assume that the bulbs are brighter when there is more current flowing through them. Which of the following relationships correctly describe the brightness of the bulbs?
(a) A = B > C = D
(b) C = D > A = B
(c) A = B = C = D
(d) A = C > B = D