Physics
Grade-10
Easy
Question
An induced emf is produced when a magnet is moved into a coil. The magnitude of induced emf does not depend on:
- The resistivity of the wire of the coil
- The number of turns of the coil
- The strength of the magnet
- The speed with which the magnet is moved
Hint:
An induced emf is produced when a magnet is moved into a coil which depends on the i) relative motion between the magnet and the coil conductor, ii) number of turns and iii) strength of the coil.
The correct answer is: The resistivity of the wire of the coil
The induced electromagnetic field is not dependent on the resistivity of the wire of the coil.
- An induced electromagnetic field is formed from the relative motion between the magnet and the coil conductor.
- The strength of the electromagnetic field depends on the number of turns and the strength of the coil.
- The speed at which the magnet is moved to the coil determines the magnitude of the induced electromagnetic field.
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