A coil of 1.60 turns of cross-sectional area `250cm^(2)` rotates at an angular velocity of 300rad/s about an axis parallel to the plane of the coil in a uniform magnetic field of 0.6 weber/mere`.^(2)`. What is the maximum EMF induced in the coil. If the coil is connected to a resistance of `2Omega`, what is the maximum torque that has to be delivered to maintain its motion.

A coil of N turns and mean cross-sectional area A is rotating with uniform angular velocity omega about an axis at right angle to uniform magnetic field B. The induced emf E in the coil will be

The coil of an a.c. generator has 100 turns, each of cross sectional area 2 m^(2) . It is rotating at a constant angular speed of 30 radians // s, in a uniform magnetic field of 2 xx 10^(-2) T. What is the maximum power dissipated in the circuit, if the resistance of the circuit including that of the coil is 600 Omega ?

A circular coil of cross-sectional area 200 cm^(2) and 20 turns is rotated about the vertical diameter with angular speed of 50 rad//s in a uniform magnetic of 3.0 xx 10^(-2) T . Calculate the maximum value of current in the coil.

A circular coil of 30 turns and area 250 cm^(2) is rotating about its vertical diameter with an angular velocity of 50 "rad" // s , when placed in a uniform magnetic field of strength 0.02 T, acting horizontally to its plane. Calculate the maximum voltage induced in the coil.

A circular coil of area 300 cm ^(2) and 25 turns rotates about its vertical diameter with an angular speed of 40 s ^(-1) in a uniform horizontal magnetic field of magnitude 0.05 T . Obtain the maximum voltage induced in the coil .

(a) Draw a schematic diagram of an AC generator. Explain is working and obtain the expression for the instantaneous value of the emf in terms of the magnetic field B, number of turns N of the coil of area A rotating with angular frequency omega . Show how an alternating emf is generated by loop of wire rotating in a magnetic field. (b) A circular coil of radius 10 cm and 20 turns is rotated about its vertical diameter with angular speed of 50 rad s^(-1). in a uniform horizontal magnetic field of 3.0xx10^(-2)T . (i) Calculate the maximum and average emf induced in the coil. (ii) If the coil forms a closed loop of resistance 10 Omega , calculate the maximum current in the coil and the average power loss due to Joule heating.