MAGNETIC FLUX & INDUCED EMF

Establish a relation between change of magnetic flux and induced EMF.

Write True (T) or False (F): Emf can be induced in a closed coil when magnetic flux linkage through it changes.

A copper ring and a wooden ring of same dimension are placed so that there is same magnetic flux through each. Is induced current or induced EMF same in each case when flux · starts varying at the same rate in both.

A : Total induced emf in a loop is not confined to any particular point but it is distributed around the loop in direct proportion to the resistances of its parts. R: In general when there is no change in magnetic flux, no induced emf is produced.

If the instantaneous magnetic flux and induced emf produced in a coil is phi and E respectively, then a according to Faraday's law of electromagetic induction

If the instantaneous magnetic flux and induced emf produced in a coil is phi and E respectively, then a according to Faraday's law of electromagetic induction