Question

Three resistance $R,2R$ and $3R$ are connected in parrallel to a battery ,then

• A. The potential drop across $3R$ is maximum
• B. The current through each resistance is same
• C. The heat developed in $3R$ is maximum
• D. The heat developed in $R$ is maximum

Answer 1

The correct option is D The heat developed in $R$ is maximum

Given,

Three resistances $(R,2R,3R)$ are connected in parallel.

For a parallel circuit, voltage is constant.

Heat developed, $H=\frac{V^2}{R}t$

$H\propto \frac{1}{R}$

$\therefore$ Heat developed will be maximum in $R$.