The inductance of a resistanceless coil is 0.5 henry. In the coil, the value of alternating current is 0.2 A, whose frequency is 50 Hz. The reactance of circuit is

Impedance of a coil having inductance 0.4 H at frequency of 50 Hz will be

The reactance of an inductor of inductance 1/pi H at frequency 50 Hz is

The frequency of an alternating current is 50 Hz .In what time will the value of current rise to rms value from zero?

In an LR circuit , the phase angle between alternating voltage and alternating current is 45^@ . The value of inductive reactance will be

A lamb in which 10 A current can flow at 15 V is connected with an alternating source of potential 220 V and frequency 50 Hz. What should be the inductance of choke coll required to light the bulb?

IF the value of inductor L is 1mH and the applied ac source frequency is 50 Hz, find the inductive reactance in the above case.

An LR circuit contains a resistance of 40Omega and an inductance of 25 mH .What would be the power dissipated in the circuit for an applied alternating voltage of frequency 1000 Hz and peak value of 10 V?

The mutual inductance between two adjacent coils is 1.5 H. If the current in the primary coil changes from 0 to 20 A in 0.05 s, determine the average emf induced in the secondary coil. If the number of turns in the secondary coil is 800, what change in flux will be observed in it?

A series combination of an inductor of self-inductance L, capacitor of capacitance C and resistor R is connected to an alternating voltage source of V=V_0sinomegat . The current through the circuit is I=I_0sin(omegat-theta) ,where I_0=V_0/(sqrt(R^2+(omega-1/(omegaC))^2)) and theta=tan^-1 ""1/R(omegaL-1/(omegaC)) . Now that, the frequency of both voltage and current is f=omega/(2pi) . The rms value of these parameters during one complete cycles are V_(rms)=V_0/sqrt2 and I_(rms)=I_0/sqrt2 respectively. These values are shown in alternating voltmeter and ammeter. The power consumed by the circuit P=VI. The mean value i.e., the effective power of the circuit in a complete cycle is overlineP=V_(rms)I_(rms)costheta . This costheta is termed the power factor. The frequency of the applied alternating voltage in an ac circuit is 50 Hz.Resistance and self inductance are 37.6Omega and 120 mH . The phase difference between the voltage and current is

The frequency of applied of ac voltage to an inductive coil is 1000Hz.L=25 mH and the power factor of the circuit is 0.1.Find the resistance of the coil.