Question

State true or false.
Statement : Power $=\frac{V^2}{R}$ is used only when potential across the resistors are constant.

• A. True
• B. False

Answer 1

The correct option is A True

If V = constant so we will try to eliminate variable physical quantity which is current.
$I=\frac{V}{R}(V=I\times R)$
$P=V\frac{V}{R}P=\frac{V^2}{R}$