Electro Magnetic Induction And Alternating Currents Question 153
Question: If an LCR series circuit is connected to an ac source, then at resonance the
Options:
A) voltage across R is zero
B) voltage across R equals the applied voltage
C) voltage across C is zero
D) voltage across L equals the applied voltage
Show Answer
Answer:
Correct Answer: B
Solution:
- In series RLC circuit, Voltage, $ V=\sqrt{V_{R}^{2}+{{(V_{L}-V_{C})}^{2}}} $
And, at resonance, $ V_{L}=V_{C} $
Hence, $ V=V_{R} $
