Alternating Cur...

A straight conductor of length 0.4m is moved with a speed of 7ms^-1 perpindicular to magnetic field of induction 0.9 Wb/m². The induced e.m.f across the conductor is

In an A.C. circuit, the current is i = 5 sin (100t - π/2) amp and the a.c. potential is V = 200 sin (100t) volt. Then, the power consumption is

A metal ring is held horizontally and bar magnet is dropped through the ring with its length along the axis of the ring. The acceleration of the falling magnet is

In the circuit shown in fig what will be the reading of the reading of the voltmeter?

In the circuit shown in fig. what will be the readings of voltmeter and ammeter ?

In a transformer, n_p = 500, n_s= 5000. Input voltage is 20 V and frequency is 50 Hz. Then in the output, we have

In an ac circuit, with voltage V and current I the power dissipated is

Two coils have mutual inductance 0.005 H. The current changes in the first coil according to equation I = I₀ sin ωt where I₀ = 10 A and ω = 100 π rad/ sec. The maximum value of e.m.f in second coil is

For high frequency, capacitor offers