Home
Class 12
PHYSICS
An Ac voltage V=V0 sin 100t is applied t...

An Ac voltage `V=V_0 sin 100t` is applied to the circuit, the phase difference between current and voltage is found to be `pi/4`, then
.

A

R = 100 `Omega`, C= `mu`F

B

R = 1k`Omega` , C = `1mu`F

C

R = 10k`Omega` , L = `H

D

R = 1 k`Omega` , L = 10H.

Text Solution

Verified by Experts

The correct Answer is:
B
In the given graph current is leading the voltage by `45^(@)`. Therefore circuit is C-R.
tan`phi` = `X_C / R` and `phi = pi/4`
`therefore X_C = R`
`implies omega`CR = 1
`impliesCR = 1 / omega = 1 / 100`
When , R = 1k`Omega` = `10^(3) Omega`, then
`C = 1/10 = 10^(-5)F = 10mu`F.
Promotional Banner

Similar Questions

Explore conceptually related problems

A seriesLCR circuit is connected to an ac voltage source. When L is removed from the circuit, the phase difference between current and voltage is pi/3 . If instead C is removed from the circuit phase difference is again pi/3 between current and voltage. Power factor of circuit is:

Find the phase difference between voltage and current in L-C circuit.

In an electrical circuit R,L,C and an AC voltage source are all connected in series. When L is removed from the circuit, the phase difference between the voltage and the current in the circuit is pi//3 . If instead, C is removed from the circuit, difference the phase difference is again pi//3 . The power factor of the circuit is

In an electrical circuit R,L,C and an AC voltage source are all connected in series. When L is removed from the circuit, the phase difference between the voltage and the current in the circuit is pi//3 . If instead, C is removed from the circuit, difference the phase difference is again pi//3 . The power factor of the circuit is

The phase difference between voltage and current in series L-C circuit is

When a voltage V_(s)=200 sqrt(2) sin (100 t) V is applied to an ac circuit the current in the circuit is found to be i=2 sin [omega t + (pi//4)]A . Find the average power consumed in the circuit.

When a voltage V_(s)=200 sqrt(2) sin (100 t) V is applied to an ac circuit the current in the circuit is found to be i=2 sin [omega t + (pi//4)]A . Find the average power consumed in the circuit.

In an electrical circuit R,L, C and a.c voltage source are all connected in series. When L is removed from the circuit , the phase difference between the voltage and current in the circuit is π/6. If instead ,C is removed from the circuit , the phase difference is again π/6 . The power factor of the circuit is

Phase difference between voltage and current in a capacitor in an ac circuit is

In the LCR circuit shown in figure unknown resistance and alternating voltage source are connected.When swith S is closed then there is a phase difference of pi/4 between current and applied voltage and voltage across resister is 100/sqrt2 V .When switch is open current and applied voltage are in same phase.Neglecting resistance of connecting wire answer the following questions : Peak voltage of applied voltage sources is: