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.

Two cells each of e.m.f. 1.1 V and internal resistance 2Omega are joined in parallel with a resistance of 10Omega . Find the curent throught the resistance and through each cell.

An armature coil consists of 20 turns of wire, each of area A = 0.09 m^2 and total resistance 15 ohm . It rotates in a magnetic field of 0.5 T at a constant frequency of 150//pi . Calculate the value of maximum induced e.m.f. produced in the coil.

An armature coil consists of 20 turns of wire, each of area A = 0.09 m^2 and total resistance 15 ohm . It rotates in a magnetic field of 0.5 T at a constant frequency of 150//pi . Calculate the value of average induced e.m.f. produced in the coil.

An a.c. generator consists of a coil of 2,000 turns each of area 80 cm^2 and rotating at an angular speed of 200 r.p.m. in a uniform magnetic field of 4.8 xx 10^-2 T. Calculate the peak and r.m.s. value of e.m.f induced in the coil.

A circuit consists of a resistance 10 ohm and a capacitance 0.1muF . If an alternating e.m.f. of 100V, 50Hz is applied, calculate the current in the circuit.

An a.c. generator consists of a coil of 100 turns and cross sectional area of 3 m^(2) , rotating at a constant angular speed of 60 rad//sec in a uniform magnetic field of 0.04 T. The resistance of the coil is 500 Omega . Calculate maximum current drawn from the generator.

An a.c. generator consists of a coil of 100 turns and cross sectional area of 3 m^(2) , rotating at a constant angular speed of 60 rad//sec in a uniform magnetic field of 0.04 T. The resistance of the coil is 500 Omega . Calculate max. power dissipation in the coil.

An a.c. generator consists of a coil of 50 turns and area 2.5 m^(2) rotating att an angular speed of 60 rad s^(-1) in a uniform magnetic field B = 0.3 T between two fixed pole pieces. The resistance of the circuit including that of coil is 500 Omega . Find What will be the orientaiton of the coil w.r.t. the magnetic field to have (a) maximum (b) zero magnetic flux ?