Ratio of thermal energy released in two resistor $R$ and $3 R$ connected in parallel in an electric

Question

Ratio of thermal energy released in two resistor $R$ and $3 R$ connected in parallel in an electric circuit is

Professor PC Thomas Classes · Answer

In parallel, $V$ is same. $P = \frac{V^2}{R} \implies P \propto \frac{1}{R}$. Ratio $P_1:P_2 = \frac{1}{R} : \frac{1}{3R} = 3:1$.