An LCR series circuit, connected to a source E, is at resonance. Then

Question

An LCR series circuit, connected to a source E, is at resonance. Then (A) the voltage across R is zero (B) the voltage across R equals applied voltage (C) the voltage across C is zero (D) the voltage across L equals applied voltage

Tardigrade Admin · Accepted Answer

Equation of voltage E=√VR2+(VL-VC)2 At resonance (series fircuit) VL=VC ⇒ E=VR ie, whole applied voltage appeared across the resistance.

Q. An LCR series circuit, connected to a source $E$ , is at resonance. Then

the voltage across R is zero

the voltage across R equals applied voltage

the voltage across C is zero

the voltage across L equals applied voltage

Equation of voltage $E = V_{R}^{2} + (V_{L} - V_{C})^{2}$
At resonance (series fircuit)
$V_{L} = V_{C} \Rightarrow E = V_{R}$
ie, whole applied voltage appeared across the resistance.

Q. An LCR series circuit, connected to a source E, is at resonance. Then