A very small circular loop of radius a is initially (at t = 0) coplanar and concentric with a much larger fixed circular loop of radius b. A constant current I flows in the larger loop. The smaller loop is rotated with a constant angular speed `omega` about the common diameter. The emf induced in the smaller loop as a function of time t is
A very small circular loop of radius a is initially (at t = 0) coplanar and concentric with a much larger fixed circular loop of radius b. A constant current I flows in the larger loop. The smaller loop is rotated with a constant angular speed `omega` about the common diameter. The emf induced in the smaller loop as a function of time t is
A
`pi mu_(0)I_(0) (a^(2))/(b)omega "sin"(omegat)`
B
`(pi mu_(0) I_(0))/(2) * (a^(2))/(b)omega"cos"(omega t)`
C
`(pi mu_(0) I_(0)b^(2))/(a) omega"cos"(omega t)`
D
`(pi mu_(0) I_(0))/(2) (a^(2))/(b) omega "sin" (omega t)`
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The correct Answer is:
D
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