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PRS Questions:<br />

Driven RLC Circuits<br />

Classes 27 & 28<br />

PRS: Leading or Lagging?<br />

The plot shows the<br />

driving voltage V<br />

(black curve) and<br />

the current I (red<br />

curve) in a driven<br />

RLC circuit. In<br />

this circuit,<br />

0-.. 1. The current leads the voltage<br />

-<br />

0"- 2. The current lags the voltage<br />

3. Don't have a clue<br />

PRS: Leading or Lagging?<br />

The graph shows<br />

current versus voltage<br />

in a driven RLC circuit<br />

at a given driving<br />

frequency. In this plot<br />

/<br />

COMRfJH<br />

/'<br />

VOLTAGE<br />

""'''''<br />

0"- 1. The current leads the voltage by about 45"<br />

0% 2. The current lags the voltage by about 45" ~<br />

0% 3. The current and the voltage are In phase ,M<br />

0% 4. Don:t have a clue. ~<br />

Class 31 14

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