For an LCR circuit, the power transferred from the driving source to t

1.	For an LCR circuit, the power transferred from the driving source to the driven oscillator is P = I2Z cos φ. (a) Here, the power factor cos φ ≥ 0, P ≥ 0. (b) The driving force can give no energy to the oscillator (P = 0) in some cases. (c) The driving force cannot syphon out (P < 0) the energy out of oscillator. (d) The driving force can take away energy out of the oscillator.
Answer» (a), (b), (c) (a) Here, the power factor cos φ ≥ 0, P ≥ 0. (b) The driving force can give no energy to the oscillator (P = 0) in some cases. (c) The driving force cannot syphon out (P < 0) the energy out of oscillator.

For an LCR circuit, the power transferred from the driving source to the driven oscillator is P = I2Z cos φ. (a) Here, the power factor cos φ ≥ 0, P ≥ 0. (b) The driving force can give no energy to the oscillator (P = 0) in some cases. (c) The driving force cannot syphon out (P < 0) the energy out of oscillator. (d) The driving force can take away energy out of the oscillator.

Answer»

(a), (b), (c)

(a) Here, the power factor cos φ ≥ 0, P ≥ 0.

(b) The driving force can give no energy to the oscillator (P = 0) in some cases.

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