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Related Questions

• A coil having an area $2{m^2}$ is placed in a magnetic field which changes from $1Wb/{m^2}$to $4Wb/{m^2}$in a interval of 2 second. The e.m.f. induced in the coil will be

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• A conducting rod of length l is falling with a velocity v perpendicular to a uniform horizontal magnetic field B. The potential difference between its two ends will be

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• The direction of induced current is such that it opposes the very cause that has produced it. This is the law of

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• A 100% efficient transformer has 100 turns in the primary and 25 turns in its secondary coil. If the current in the secondary coil is 4 amp, then the current in the primary coil is

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• A wheel with ten metallic spokes each 0.50 m long is rotated with a speed of 120 rev/min in a plane normal to the earth’s magnetic field at the place. If the magnitude of the field is 0.4 Gauss, the induced e.m.f. between the axle and the rim of the wheel is equal to

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