Physics
Grade-10
Easy
Question
The magnitude of the induced e.m.f. in a conductor depends on the:
- Flux density of the magnetic field
- Amount of flux cut
- Amount of flux linked
- Rate of change of flux-linked
Hint:
The Faraday's law of induction states that the induced EMF's magnitude is simply the sum of the winding's number of turns and the rate at which its flux linkage is changing.
The correct answer is: Rate of change of flux-linked
The magnitude of the induced electromagnetic field in a conductor depends on the rate of the change in the flux linkage.
- The magnetic field is formed when the magnet creates a relative motion with the coil.
- The flux linkage is the link of the magnetic field with the conductor of the coil.
- The Faraday's law of induction states that the induced EMF's magnitude is simply the sum total of the winding's number of turns and the rate at which its flux linkage is changing.
- Therefore, the rate of change of the flux linkage determines the induced EMF in a conductor.
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