Question

Power dissipated across the 8 Ω resistor in the circuit shown here is 2 watt. The power dissipated in watt units across the 3 Ω  resistor is

(a) 3.0

(b) 2.0

(c) 1.0

(d) 0.5

Answer 1

The correct option is (a) 3.0.

Explanation:

The current through the lower branch is I/3 and that through the upper branch is 2I/3. Let the power dissipated in the 3 Ω resistor be P. Then