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Energy dissipates in LCR circuit in...

Energy dissipates in LCR circuit in

A

L only

B

C only

C

R only

D

All of the above

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The correct Answer is:
C
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In a series LCR circuit in which R= 3Omega , L=25mH and C=800muF a sinusoidal a.c. voltage of peak value 250 V is applied. Find current in the circuit at resonant condition.

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In a series LCR circuit in which R= 3Omega , L=25mH and C=800muF a sinusoidal a.c. voltage of peak value 250 V is applied. Find frequency at which resonance occurs

The amplitude of current in series LCR circuit connected to an AC frequency "omega" is given by i_m = v_m/(sqrt(R^2+(X_L-X_C)^2) Where X_L and X_C are inductive and capacitative reactances respectively and "v_m" is amplitude of voltage. Starting fron this equation show that sharpness of resonance in the circuit is equal to the quality factor of the circuit.

BINA LIBRARY-ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENT-EXERCISE
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  2. A coil of wire of radius r has 600 turns and a self inductance of 108 ...

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  3. The average power dissipation in a pure capacitor in ac circuit is

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  4. The average power dissipation on a pure inductor L in an ac circuit is

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  5. An oscillator circuit consists of an inductance of 0.5 mH and capacito...

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  6. A transformer has 2100 tums in primary and 4200 turns in secondary. An...

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  8. Lenz's law is a consequence of the law of conservation of

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  9. The phenomenon of electromagnetic induction was discovered by

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  10. If an aC ammeter reads I ampere in an aC circuit, the peak value of th...

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  11. In a transformer, energy is transferred from the primary to the second...

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  12. An electron enters a region with uniform velocity and it moves in the ...

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  13. An electron of charge e enters a magnetic field B with a velocity v an...

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  14. A charged particle moves at right angles to a uniform magnetic field a...

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  15. Energy dissipates in LCR circuit in

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  16. The working of a dynamo is based on the principle of

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  17. The average power dissipation on a pure inductor L in an ac circuit is

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  18. A capacitor of capacity C has reactance X. If the capacitance and freq...

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  19. When current changes from + 2A to -2A in 0.05 S, an emf of 8V is induc...

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