When a magnet is being brought towards a coil, the emf induced in the coil does not depend on:
Answer & explanation
Correct answer: option 4
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