Power consumption in series vs parallel circuits · CAP 2005 #8

Physics · electromagnetism

Problem

Circuit A is made of resistors connected in series to a battery; circuit B is made of resistors connected in parallel to a battery. Let

P

be the power drawn from the batteries. As the number of resistors in each circuit is increased, (a)

P_A

increases and

P_B

decreases; (b) both

P_A

and

P_B

increase; (c)

P_A

decreases and

P_B

increases; (d)

P_A

and

P_B

remain the same.