Question

Is it possible to generate emf without rotating the coil? Explain​

Answer 1

Answer:

Voltage is induced in the coil because of the cutting action thru lines of magnetic flux via physical movement of the coil thru space. ... When a coil is rotated in magnetic field about a line other than axis of coil, the magnetic flux linking through the coil changes, as a result of which an induced emf is produced.

Answer 2

Yes, emf can be generated by keeping the coil stationery.

Faraday's law of electromotive force.

Yes, it is possible to generate electromotive force without moving the coil. This can be proven by Faraday's law of electromotive force.

• According to Faraday's law, electricity can be generated through a magnetic flux by either changing the magnetic field's magnitude, movement of loops etc.
• This can be proven by the following formula:

            Ф= NBA cosθ

Here, N= number of turns

B=Magnitude of field

A= area of the loop

Thus, by keeping the coil stationary, electric current can be produced via:

• Changing the coil's area.
• Angle between the normal and the magnetic field direction
• Magnitude of magnetic field

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