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Standard XII
Physics
Question

In a series LCR circuit R=200 Omega and the voltage and the frequency of the main supply is 220 V and 50 Hz respectively. On taking out the capacitance from the circuit the current lags behind the voltage by 300. On taking out the inductor from the circuit the current leads the voltage by 300. The power dissipated in the LCR circuit is
  1. 305 W
  2. 210 W
  3. ZeroW
  4. 242 W

A
ZeroW
B
242 W
C
305 W
D
210 W
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Solution
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The given circuit is under resonance as XL=XC

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