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Related Questions

• The inductance of a closed-packed coil of 400 turns is 8 mH. A current of 5 mA is passed through it. The magnetic flux through each turn of the coil is

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• In the following circuit, the bulb will become suddenly bright if

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• The induction coil works on the principle of

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• A coil has 2000 turns and area of $70c{m^2}$. The magnetic field perpendicular to the plane of the coil is $0.3Wb/{m^2}$and takes $0.1 sec$ to rotate through ${180^o}$. The value of the induced e.m.f. will be

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• The magnetic flux linked with a coil, in webers, is given by the equations $\varphi = 3{t^2} + 4t + 9$. Then the magnitude of induced e.m.f. at t = 2 second will be

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