For an L-C-R circuit, the power transferred from the driving source to the driven oscillator is .
(a) | Here, the power factor cosϕ ≥ 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 the oscillator. |
(d) | The driving force can take away energy out of the oscillator. |
1. (a, b, c)
2. (a, c, d)
3. (b, c, d)
4. (c, d)
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