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A conducting circular loop is placed in a uniform magnetic field 0.04T with its plane perpendicular to the magnetic field. The radius of the loop starts shrinking at 2 mm/s. The induced emf in the loop when the redius is 2 cm is :
Aug 17, 2018
A= (Pi)(sqr(r)). It is given dr/dt = -2 mm/sec . Thus dA/dt = 2(pi)r(dr/dt). mod(E at r= 2cm...
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