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Two coaxial solenoids are made by winding thin insulated wire over a pipe of cross-sectional area and length. If one of the solenoids has turns and the other turns, their mutual inductance is
(a)
(b)
(c)
(d)
(e)

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Important Questions on Electromagnetic Induction
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Two inductors and are connected in parallel and a time varying current flows as shown in figure. The ratio ot current at any ime Is

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Consider two coils of radii and , placed at a distance away as shown in the figure. Assuming the length of the coils with the number of turns per unit length of the two coils respectively, the mutual inductance of the two coils is

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