Given below are two statements: Statement I: Maximum power …

Physics Alternating Current Statement Based MCQ (Single Correct)

Given below are two statements:

Statement I: Maximum power is dissipated in a circuit containing an inductor, a capacitor and a resistor connected in series with an AC source, when resonance occurs.

Statement II: Maximum power is dissipated in a circuit containing pure resistor due to zero phase difference between current and voltage.
In the light of the above statements, choose the correct answer from the options given below:

Statement I is true but Statement II is false.

Both Statement I and Statement II are false.

Both Statement I and Statement II are true.

Statement I is false but Statement II is true.

Text Solution

Verified by Experts

The correct answer is:

For circuit,
In series circuit, at resonance, impedance is minimum, i.e., . So maximum power is dissipated.
As the phase difference between current and voltage is in case of inductor and capacitors. So the power consumed by them is zero and thus maximum power is dissipated by resistor only.
Both statements I and II are true.