Home
Class 12
PHYSICS
In a circuit L,Cand R are connected in s...

In a circuit L,Cand R are connected in series with an alternating voltage of frequency f the current leads the voltage by 45^@. The value of C is

A

`1/(pi f(2pi f L - R)`

B

`1/(2pi f(2pi f L - R)`

C

`1/(pi f(2pi f L + R)`

D

`1/(2pi f(2pi f L + R)`

Text Solution

Verified by Experts

Promotional Banner

Similar Questions

Explore conceptually related problems

Find the impedance of the circuit containing an inductance of 2 henry, a capacitance of 6 mu F and a resistance of 100 Omega connected in series with an a.c. source of frequency 50 Hz. By what angle will the current lead or lag the applied e.m.f. in the circuit ?

An electrical element X when connected to an alternating voltage source has current through it leading the voltage by pi/2 radian. Identify X and write an expression for its reactance.

What Is the frequency of alternating current (A.C.) ?

The frequency of an alternating voltage is 50 cycles//sec and its amplitude is 120V. Then the r.m.s. value of voltage is

An alternating voltage is given by e=6 sin 314t.Find:- frequency

The peak value of alternating voltage is 423 V. Its root mean square value is

In LCR series combination R = 10 Omega , L = 1 mH, C = 2 muF . Determine :- the current in the circuit when an alternating voltage of 10 mV operating at the resonant frequency is applied to the series combination.

In a circuit containing an inductance of zero resistance, the e.m.f. of the applied ac voltage leads the current by