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Related Questions

• 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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• One conducting U tube can slide inside another as shown in figure, maintaining electrical contacts between the tubes. The magnetic field $B$ is perpendicular to the plane of the figure. If each tube moves towards the other at a constant sped $v$ then the emf induced in the circuit in terms of $B$, $l$ and $v$ where $l$ is the width of each tube, will be

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• A step-down transformer is connected to 2400 volts line and 80 amperes of current is found to flow in output load. The ratio of the turns in primary and secondary coil is $20 : 1$. If transformer efficiency is 100%, then the current flowing in primary coil will be

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• The square root of the product of inductance and capacitance has the dimension of

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• The adjoining figure shows two bulbs $B_1$ and $B_2$ resistor $R$ and an inductor $L$. When the switch S is turned off

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