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EMF and EMF Devices

Explain why r...

Question

Explain why rotating either the coil or the magnet in a sgenerator induces an electric current.

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Solution

Either rotating the coil or the magnet changes the magnetic flux passing through the coil. Because of this change in magnetic flux, an emf is induced in the coil which further induces the electric current in the coil.

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Similar questions

(a) Explain the principle of an electric generator.

(b) State two ways in which the current induced in the coil of a generator could be increased.

Q. Question 2
The phenomenon of electromagnetic induction is
(a) the process of charging a body.
(b) the process of generating magnetic field due to a current passing through a coil.
(c) producing induced current in a coil due to relative motion between a magnet and the coil.
(d) the process of rotating a coil of an electric motor.

The phenomenon of electromagnetic induction is

(a) the process of charging a body

(b) the process of generating magnetic field due to a current passing through a coil

(c) producing induced current in a coil due to relative motion between a magnet and the coil

(d) the process of rotating a coil of an electric motor

Q. In an electric generator, when the coil is in _____ position, maximum current will be induced in it.

Q. What is an AC generator? Obtain an expression for the sinusoidal emf induced in the coil of ac generator, rotating with a uniform angular speed in a uniform magnetic field.

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