Q. The formula for induced e.m.f. in a coil due to change in magnetic flux through the coil is (here $A$ = area of the coil, $B =$ magnetic field)
A) $e = - A.\frac{dB}{dt}$
B) $e = - B.\frac{dA}{dt}$
C) $e = - \frac{d}{dt}(A.B)$
D) $e = - \frac{d}{dt}(A \times B)$
Explanation
The correct answer is Option C: $e = - \frac{d}{dt}(A.B)$.
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.