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A conducting circular loop made of a thin wire has area 3.5×10-3 m2 and resistance 10 Ω. It is placed perpendicular to a time dependent magnetic field, Bt=0.4sin50πt T. The field is uniform in space. Then, the net charge flowing through the loop during t=0 s and t=10 ms is close to,

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Important Questions on Electromagnetic Induction

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The self-induced emf of a coil is 25 volts. When the current in it is changed at uniform rate from 10 A to 25 A in 1 s , the change in the energy of the inductance is:
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A copper wire is wound on a wooden frame. Each side of the frame is increased by a factor of 3. If the number of turns of the coil per unit length of the frame remains the same, then the self inductance of the coil ______________.
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There are two long co-axial solenoids of the same length l. The inner and outer coils have radii R1 and R2 and a number of turns per unit length n1 and n2, respectively. The ratio of mutual inductance to the self-inductance of the inner-coil is: