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: 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 :
- (A)Both Statement I and Statement II are false✓ Correct
- (B)Statement I is true but Statement II is false
- (C)Both Statement I and Statement II are true
- (D)Statement I is false but Statement II is true
Answer: (A)
Solution
For electrical resonance to occur in an AC circuit, both an inductor and a capacitor must be present (not just one), so that the phase angle φ = 0. Statement I is false. For a pure inductor or pure capacitor, the power factor is zero (cos φ = 0), which means they consume zero average power, not high power. Statement II is also false. Therefore, both statements are false.
JEE Main · 2023 · 13 Apr 2023 · Shift 2 · Single correct option