MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

RLC Circuit

If the value ...

Question

If the value of virtual voltages across $L, C$ and $R$ in an $L - C - R$ circuit are $V_{L}, V_{C}$ and $V_{R}$ respectively then the source voltage will be

A

V = \sqrt{V_{R}^{2} + (V_{L} - V_{C})^{2}}

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

B

V = V_{L} + V_{C} + V_{R}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

V = \sqrt{V_{R}^{2} + (V_{L}^{2} - V_{C}^{2})}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

V = V_{L} - V_{C} + V_{R}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B $V = \sqrt{V_{R}^{2} + (V_{L} - V_{C})^{2}}$
From the phasor diagram, phase of $V_{L}$ and $V_{C}$ are perpendicular to the phase of $V_{R}$ .

Hence, $V = \sqrt{V_{R}^{2} + {(V_{L} - V_{C})}^{2}}$

Suggest Corrections

thumbs-up

0

Similar questions

Q. In an LCR circuit, voltages across the components are

V_{L}

V_{C}

V_{R}

respectively when connected to a AC source

V = V_{0} s i n (ω t)

. The relation between

V

V_{R}

V_{C}

V_{L}

L - C - R

circuit, the voltages across

R, L

C

V_{R}, V_{L}

V_{C}

respectively. Then the voltage of applied a.c. source must be

Q. Assertion :In a series RLC circuit, if

V_{R}, V_{L}

V_{C}

denote ems voltage across

R, L

C

, respectively, and

V_{s}

is the rms voltage across the source, then

V_{S} = V_{R} + V_{L} + V_{C}

. Reason: In ac circuits, Kitchoff's voltage law is correct at every instant of time.

L - C - R

V

is the effective value of the applied voltage,

V_{R}

is the voltage across

R R, V_{L}

is the effective voltage across

L, V_{C}

is the effective voltage across

C

Q. When the rms voltages

V_{L}, V_{C}

V_{R}

are measured respectively across the inductor L, the capacitor C and the resistor R in a series LCR circuit connected to an AC source, it is found that the ratio

V_{L} : V_{C} : V_{R} = 1 : 2 : 3

. If the rms voltage of the AC source is 100 V, then

V_{R}

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Series RLC

PHYSICS

Watch in App

explore_more_icon

Explore more

Standard XII Physics

Join BYJU'S Learning Program

CrossIcon