7. An inductor and a resistor are in series with a sine wave voltage source. The frequency is set so that the inductive reactance is equal to the resistance. If the frequency is increased, then ________.
(a) VR ≥ VL (b) VL < VR (c) VL = VR (d) VL > VR
Answer
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Explanation
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5555555555 14. A capacitor and a resistor are connected in series to a sine wave generator. The frequency is set so that the capacitive reactance is equal to the resistance and, thus, an equal amount of voltage appears across each component. If the frequency is increased ________. (a) VR > VC (b) VC > VR (c) VR = VC (d) VR and VC = 0
5555555555 8. A sine wave voltage is applied across an inductor. When the frequency of the voltage is decreased, the current ________. (a) is increased (b) is decreased (c) does not change (d) momentarily goes to zero
5555555555 18. In a certain series resonant circuit, VC = 125 V, VL = 125 V, and VR = 40 V. The value of the source voltage is ________. (a) 125 V (b) 250 V (c) 290 V (d) 40 V