KCET · Physics · Magnetic Effects of Current
In an LCR circuit, at resonance
- A the current and voltage are in phase
- B the impedance is maximum
- C the current is minimum
- D the current leads the voltage by II / \( 2 \)
Answer & Solution
Correct Answer
(A) the current and voltage are in phase
Step-by-step Solution
Detailed explanation
In an LCR circuit, at resonance the inductive reactance and capacitive reactance are equal in magnitude but in opposite direction therefore they cancel each other. Thus, at resonance the current and voltage are in phase.
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