Two resistors of values 6.0 and 12.0 W are connected in parallel.This combination in turn is hooked in series with a 4.0-W resistor and a 24-V battery.What is the current in the 6-W resistor?
A)2.0 A
B)3.0 A
C)6.0 A
D)12 A

Question

Quizplus · Accepted Answer

The equivalent resistance of the parallel resistors is 4.0 Ω. Adding the series resistor gives a total resistance of 8.0 Ω. Using Ohm's law (V = IR), the total current is 3.0 A. The current through the 6.0 Ω resistor is the same as the total current in the parallel circuit, which is 2.0 A.

Two Resistors of Values 6