Question
Physics Question on Current Electricity
For a series LCR circuit, at the condition of resonance, the value of the power factor will be:
A
Zero
B
1
C
0.2
D
0.5
Answer
1
Explanation
Solution
At resonance in a series LCR circuit, the inductive reactance and capacitive reactance cancel each other out. As a result, the impedance is purely resistive, and the power factor, which is the cosine of the phase angle between current and voltage, becomes 1, or unity.