The magnetic flux through a closed circuit is `phi`= 15t-t+5 Weber. If the resistance of the circuit is `10Omega`, calculate the magnitude of the current induced in 0.2 sec.

The magnetic flux through a coil is 5 xx10^-4 Wb at time t = 0. It reduces to ten percent of its original value in 0.5s. The magnitude of e.m.f. induced in the coil is

A coil has an inductance of 0.5H. Calculate:- its impedance if the resistance of the circuit is 50 Omega and

if a conductor is moving in the north direction and magnetic field is applied vertically upwards, the change in flux is 2 xx10^-4 Wb within 2 s.if the resistance of conductor is 5Omega , then the magnitude of induced current will be

Magnetic flux in a closed circuit of resistance 20Omega varies with time tin accordance with equation phi = 6t^2-5t +1 . Find the magnitude of induced current at t=0.25 sec.

The magnetic flux in a coil is phi = 4t^2 + 4t + 4 . What is the magnitude of induced e.m.f. at t = 3sec?

If the resistors 5Omega , 10Omega and 30Omega are connected in parallel to battery of 12 V, find the effective resistance in the circuit. Calculate the total current and current in each resistor.

The value of mutual inductance of two coils is B 10 mH. If the current in one of the coil changes from 5A to 1A in 0.2 s, calculate the value of emf induced in the other coil. Also calculate the value of induced charge passing through thecoil if its resistance is 5 ohm.

Find out the value of current through 2 Omega resistance for the given circuit

A battery of emf 12 V and internal resistance 3 Omega is connected to a resistor. If the current in the circuit is 0.6 A, Calculate terminal voltage of the battery when the circuit is closed.