IIT JEE , AIEEE Forum - Physics , Magnetism

RAJe

COIL OF DYNAMO ROATATING IN MAGNETIC FIELD THE DEVELOPED INDUCED EMF CHANGES AND THE NUMBER OF MAGNETIC LINES OF FORCE CHANGES THEN

ANSWER: LINES OF FORCE CHANGES MAX WHILE EMF INDUCED IS ZERO

EXPLAIN THE ANSWER :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

eistien

hey consider the flux as a sine function then the emf is a cos function due to faradays law by differentiation as emf is 0 then cos function is 0 which means sine function is 90 then flux has its max value no thats the answer!!!

suresan

The electric flux linked with the coil

= NAB Cos wt, where wt is the angle between B and A.

then induced emf E = d

/ dt = - NABw Sin wt

When wt = 0, Magnetude of Electric flux

will be maximum (NAB) and the Magetude of induced emf E will be minimum ( 0).

eistien

hey raje is our explaination correct???

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