Q. The heat developed in an electric wire of resistance $R$ by a current $I$ for a time $t$ is
A) $\frac{I^{2}Rt}{4.2}cal$
B) $\frac{I^{2}t}{4.2R}cal$
C) $\frac{I^{2}R}{4.2\ t}cal$
D) $\frac{Rt}{4.2\ I^{2}}cal$
Explanation
The correct answer is Option A: $\frac{I^{2}Rt}{4.2}cal$.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.