Light Bulb Brightness in Circuit · PhysicsBowl 2014 #22
Physics · electromagnetism
Problem
For the circuit shown, all three light bulbs have the same resistance. The battery and wires have no resistance. What is the proper ranking of the bulbs' brightness?
[Figure: Circuit with battery connected to three light bulbs - bulb 1 in series with parallel combination of bulbs 2 and 3]
(A) Bulb 1 = Bulb 2 = Bulb 3
(B) Bulb 3 < Bulb 2 = Bulb 1
(C) Bulb 2 < Bulb 1 < Bulb 3
(D) Bulb 1 = Bulb 2 < Bulb 3
(E) Bulb 1 = Bulb 3 < Bulb 2