In the figure,which of the phasor diagrams represents a series RLC circuit driven at resonance?
A)1
B)2
C)3
D)4

Question

In the figure,which of the phasor diagrams represents a series RLC circuit driven at resonance? 
A)1 
B)2 
C)3 
D)4

Quizplus · Accepted Answer

At resonance, the reactive components cancel each other out and the circuit behaves purely resistively. This can be seen in phasor diagram 3, where the impedance vector is horizontal (indicating purely resistive) and in phase with the current vector. Phasor diagrams 1, 2, 4, and 5 show non-resonant behavior, where the current and voltage vectors are out of phase and/or the impedance vector has a non-horizontal component.

In the Figure,which of the Phasor Diagrams Represents a Series