Given below are two statements: Statement I: An AC circuit …

Physics Alternating Current JEE Main 2023 MCQ (Single Correct)

Given below are two statements:

Statement I: An AC circuit undergoes electrical resonance if it contains either a capacitor or an inductor.

Statement II: An AC circuit containing a pure capacitor or a pure inductor consumes high power due to its non-zero power factor.

In the light of above statements, choose the correct answer from the options given below:

Statement I is false but statement II is true

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

Text Solution

Verified by Experts

The correct answer is:

For resonance to occur the condition is X L = X C .

So, both inductor and capacitor is required.

The power factor is given by cos .

For an inductor the power factor is zero-lagging, cos 90° = 0. The angle between the voltage and current is 90°.

For a capacitor the power factor is zero-leading.

Hence, both statements are false.

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