Question

The power supplied by the dc voltage source in the circuit shown below is

• A. 0 W
• B. 1.0 W
• C. 2.5 W
• D. 3.0 W

Answer 1

The correct option is D 3.0 W


Current I in the circuit

$I=\frac{3}{2+1}=1A$

$\because$ Power supplied by the d.c. voltage source

= Power absorbed by the load.

$\therefore$ Power supplied = $I^2.R_{eq}$

=$I^2\times 3=3.0W$