A rectangular coil of n turns and area A is held in a uniform magnetic field B. If the coil is rotated at a steady angular velocity `omega` ,duduce an expression for induced emf in the coil at any instant of time

A circular coil of N turns and radius R is kept normal to the magnetic field given by B = B_0 cos omegat . Deduce an expression for e.m.f. induced in the coil. State the rule which helps to detect the direction of induced current.

A circular coil of 25 turns and radius of 12 cm is placed in a uniform magnetic field of 0.5 T normal to the plane of coil. If the current in the coil is 5 A, then total torque experienced by the coil.

A rectangular loop of area A, having N turns and carrying a current of I ampere is held in a uniform magnetic field B. Write down the expression for the maximum torque experiened by the loop.

A rectangular coil of N turns and ara of cross-section A is held in a time-varying field given by B = B_0 cosomegat , with the plane of the coil noral to the magnetic field. Deduce an expression for the e.m.f. induced in the coil.

A coil of number of turns N, area A, is rotated at a constant angular speed omega, in a uniform magnetic field B, and connected to a resistor R. Deduce expressions for : power dissipated in the coil.

In an a.c. generator, coil of N turns and area A is rotated at v revolutions per second in a uniform magnetic field B. Write the expression for e.m.f. produced.

State laws of electromagnetic induction. A rectangular loop of N turns of length 'a' and width 'b' is rotated with an angular velocity omega in a uniform magnetic field of induction B. Show that induced e.m.f. is given by e = omega N b a B sin omegat

A circular coil of 20 turns and radius 10 cm is placed in a uniform magnetic field of 0.10 T normal to the plane of the coil. If the current in the coil is 5.0 A, what is the average force on each electron in the coil due to the magnetic field? (The coil is made of copper wire of cross-sectional area 10^-5 m^2 , and the free electron density in copper is given to be about 10^29 m^-3 .)

A coil of metallic wire is stationary in non-uniform magnetic field. What is the e.m.f induced in the coil?