Explain dynamic and static induced emf with neat diagram.

Explain dynamic and static induced emf with neat diagram.
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1 Answer

Answer :

Dynamically Induced EMF:- 

In this case, either coil moves or magnet moves, so that there is relative motion between coil & magnetic field. Thus magnetic field is cut by coil & emf is induced in it. The emf induced due to relative motion is called dynamically induced emf. 

The expression for induced EMF is e = B.l.v.sinϕ 

Dynamically induced EMF is observed in DC generator, Induction Motors, Back EMF in D.C. Motor, Alternators.

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Statically Induced EMF:- 

In this case, neither coil moves nor magnet moves. The changing magnetic field links with stationary coil and emf is induced. The emf induced without any motion is called statically induced emf. 

Statically induced EMF is having two main types: 

1. Self-induced EMF: The changing magnetic flux produced by coil when links with the coil itself, the emf induced in it is called selfinduced emf. 

2. Mutually induced EMF : The changing magnetic flux produced by one coil when links with the second coil, the emf is induced in second coil. This emf is called mutually-induced emf. 

The expression for induced EMF is e= -L(di/dt) or = -N(dϕ/dt).


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