When a magnet is being brought towards a coil, the emf induced in the coil does not depend on: |
the number of turns in the coil the speed of the magnet the pole strength of the magnet the resistance of the coil |
the resistance of the coil |
The correct answer is Option (4) → the resistance of the coil Induced emf in a coil is given by Faraday’s law: $E = -N \frac{d\Phi}{dt}$ where, $N$ = number of turns, $\Phi$ = magnetic flux, and $\frac{d\Phi}{dt}$ depends on the speed of motion and pole strength of the magnet. Therefore, the induced emf depends on: → Number of turns ($N$) → Speed of the magnet → Pole strength of the magnet It does not depend on the resistance of the coil. ∴ Correct answer: Resistance of the coil |