Physics · Alternating Current
For an LCR circuit, the power transferred from the driving source to the driven oscillator is given by P = I2Z cos(φ). Which of the following statements is incorrect?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The driving force can take away energy out of the oscillator, making P negative.✓
- 2The driving force cannot siphon energy out of the oscillator.
- 3The driving force can give no energy to the oscillator (P = 0) in some cases.
- 4The power factor cos(φ) ≥ 0, hence P ≥ 0.
Correct answer
The driving force can take away energy out of the oscillator, making P negative.
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