Question

If a coil is connected to an AC circuit, what will be the phase difference between the voltage and current in the circuit?

• A. LR series resonance
• B. LCR series resonance
• C. CR series resonance
• D. LCR parallel resonance

Hint:

In LCR circuits, resonance minimizes the phase difference between the voltage and current, maximizing the current.

Answer 1

The Correct Option is B

Step 1: Phase difference in AC circuits.
The phase difference in an AC circuit with an inductor, capacitor, and resistor depends on the impedance of the circuit. In a series resonance circuit, the phase difference is minimized, and the current is in phase with the applied voltage.
Step 2: Conclusion.
For the coil connected to an AC circuit, the phase difference will be minimized in an LCR series resonance, so the correct answer is (B).