All India Engineering / Architecture Entrance Examination (AIEEE)
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AIEEE 2010 Physics
Q. 29. In a series LCR circuit 
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 30º. On taking out the inductor from the circuit the current leads the voltage by 30º. The power dissipated in the LCR circuit is
- 305 W
- 210 W
- Zero W
- 242 W
Sol:
Answer : (4)
Q. 30. Let there be a spherically symmetric charge distribution with charge density varying as
upto and for where r is the distance from the origin. The electric field at a distance 
from the origin is given by
Sol:
Answer : (2)
