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The magnetic flux linked with a coil varies with time as phi=3t^(2)+4t+9 webers. The induced emf at t=2s is

The flux linked with a circuit is given by phi=t^(3)+3t-7 . The graph between time ( x -axis) and induced emf ( y -axis) will be

The magnetic flux (in weber) linked with a coil of resistance 10 Omega is varying with respect to time t phi = 4t^(2) + 2t + 1 . Then the current in the coil at time t = 1 second is

The magnetic flux linked with a coil varies with time t as phi=4t^(2)-12t+7 where phi is in weber and tin second.The induced current is zero at time t equals to

The flux linked with a circuit is given by phi=t^(3)+3t-5 The graph between the indued e.m.f. (e) along the Y-axis and the time (t) along the X-axis will be

The area of blot of link is growing such that after t seconds, its area is given by A =(3t^(2)+7) cm^(2) . Calculate the rate of increases of area at t=5 second.

Four identical blocks each of mass m are linked by threads as shown. If the system moves with constant acceleration under the influence of force F, the tension T_(2) is

The flux linked with a coil at any instant 't' is given by phi = 10t^(2) - 50t +250 The induced emf at t = 3s is