A flat coil of 500 turns each of area `50 cm^(2)` rotates in a uniform magnetic field of `0.14 Wb//m^(2)` at an angular speed of `150 rad//sec`. The coil has a resistance of `5 Omega`. The induced e.m.f. is applied to an external resistance of 10 ohm. Calculate the peak current through the resistance.

The armature coil of an a.c. generator has 1000 turns, each of area 2m^(2) . It was rotating in a uniform magnetic field of B=0.2 T at an angular speed of 60 rad//s . It was found that in a certain position of the coil, the current in the circuit become zero. What is the displacement current through this area?

A coil of area 100 cm^(2) has 500 turns. Magnetic field of 0.1 "weber"//"metre"^(2) is perpendicular to the coil. The field is reduced to zero in 0.1 second. The induced e.m.f. in the coil is

A coil of area 10 cm^2 has 200 turns. Magnetic field of 0.1 Wb//m^2 is perpendicular to the plane of the coil. The field is reduced to zero in 0.1 s, the induced emf in the coil is

A coil 10 turns and area 10^(-2)m^(2) rotates in a magnetic field of 0.25 tesla. If the maximum induced e.m.f. is 25 mV, then the angular speed of rotation of the coil will be

A coil of 100 turns each of area 0.1 m^2 is rotated at constant speed of 300 r.p.m. in a uniform magnetic field of induction 0.02 Wb//m^2 about an axis in the plane of the coil and perpendicular to the direction of the coil.Calculate the maximum value of induced e.m.f.

An a.c. generator consists of a coil of 1000 turns and area 2m^(2) . The coil is rotating in a transverse uniform magnetic field of 0.2 T at an angular speed of 60 rad//s . What is the maximum current drawn from the generator if resistance of the circuit including that of the coil is 6000 Omega ?