ElectroMagnetic InductionHard
Question
A uniform but time varying magnetic field B = C − Kt , where K & C are positive constants and t is time, is applied perpendicular to the plane of a circular loop of radius ′a′ and resistance R. The total charge that will pass through any point of the loop by the time B becomes zero is :
Options
A.C π a2/R K
B.K π a2/R
C.C π a2/R
D.none of these
Solution
B = C − KT ; At t = 0 B = C
∴ initial flux = Cπa2 , final flux = 0
total charge flown =
= 
∴ initial flux = Cπa2 , final flux = 0
total charge flown =
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