Alternating Current

A : The ammeters and volmetrs used for measuring alternating current and voltages have non-uniform divisons on their scales. R : The instruments used for measuring alternating current and voltage are based on heating effect of current.

In an alternating current circuit in which an inductance and capacitance are joined in series, current is found to be maximum when the value of inductance is 0.5 henry and the value of capacitance is 8µF. The angular frequency of applied alternating voltage will be

An alternating current generator has an internal resistance R_(g) and an internal reactance X_(g) . It is used to supply power to a passive load consisting of a resistance R_(g) and a reactance X_(L) . For maximum power to be delivered from the generator to the load, the value of X_(L) is equal to

Two coils have a mutual inductance 0.005 H. The alternating current changes in the first coil according to equation I = underset(o)(I) sin omega t, where underset(o)(I) = 10 A and omega = 100 pi rads^(-1) . The maximum value of emf in the second coil is (in volt)

An alternating current of 1.5 mA and angular frequency omega = 300 rad/s flows through 10 Omega resistor and a 0.50 muF capacitor in series. Find the r.m.s. voltage across the capacitor and impedance of the circuit

An alternative current is given by I = (100sqrt2 sint) A . The RMS value of current is

If a direct current of value a ampere is superimposed on an alternative current I=b sin omega t flowing through a wire, what is the effective value of the resulting current in the circuit?

In the figure shown an ideal alternative current (A,C) source of 10 Volt is connected. Find half of the total average power (in watts) given by the source to the circuit.

In the figure shown an ideal alternative current (A,C) source of 10 Volt is connected. Find half of the total average power (in watts) given by the source to the circuit.

To a circuit of 1Ω resistance and 0.01 henry inductance is connected a 200 Volt line of frequency 50 cycles/ second. Calculate the reactance, the impedance and the current in the circuit and also the lag in phase between alternating voltage and current