A closed coil of wire is placed near a magnet. The magnet lies along the axis of the coil. Under which of the following conditions would there be no current in the coil?
When the coil is moved toward the stationary magnet
When the coil is moved away from the stationary magnet
when the coil is held stationary but the magnet is moved towards the coil
when both the coil and the magnet are held stationary
when the coil is held stationary but the magnet is moved away from the cell
Explanation
No explanation available
Video Explanation
No video available
Post your Contribution
Discussions (4)
The correct answer is D. when both the coil and the magnet are held stationary.
Explanation: According to Faraday's Law of electromagnetic induction, an emf (electromotive force) is induced in a coil whenever there is a changing magnetic field passing through the coil. When the coil and the magnet are held stationary relative to each other, there is no change in the magnetic field passing through the coil, so no current is induced in the coil.
Ref: New school physics page 439
