induced emf can be produced by changing the area .explain
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as the area changes the flux also change and change in flux induces emf.
As we already know d(flux)= E.dA
where E= electric field
and A = area vector
As we already know d(flux)= E.dA
where E= electric field
and A = area vector
cuteßtár:
why the flux changes
coz its the dot product of area and Electric field...
Answered by
3
Emf induced by changing the area enclosed by the coil
PQRS is a conductor bent in the shape as shown in the Figure . L1M1 is a sliding conductor of length l resting on the arms PQ and RS. A uniform magnetic field ‘B’ acts perpendicular to the plane of the conductor. The closed area of the conductor is L1QRM1. When L1M1 is moved through a distance dx in time dt, the new area is L2QRM2. Due to the change in area L2L1M1M2, there is a change in the flux linked with the conductor. Therefore, an induced emf is produced.
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PQRS is a conductor bent in the shape as shown in the Figure . L1M1 is a sliding conductor of length l resting on the arms PQ and RS. A uniform magnetic field ‘B’ acts perpendicular to the plane of the conductor. The closed area of the conductor is L1QRM1. When L1M1 is moved through a distance dx in time dt, the new area is L2QRM2. Due to the change in area L2L1M1M2, there is a change in the flux linked with the conductor. Therefore, an induced emf is produced.
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