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When resonance takes place in series LCR...

When resonance takes place in series LCR A.C. circuit,

A

current is minimum.

B

phase difference between current and voltage is `90^@`

C

phase difference between current and voltage is `0^@`

D

phase difference between current and voltage is `0^@`

Text Solution

Verified by Experts

The correct Answer is:
D
We have : `tan delta =(X_L -X_C)/R`
`therefore tan delta =0` (`because` At resonance , `X_L=X_C`)
`therefore delta=0`
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KUMAR PRAKASHAN-ALTERNATING CURRENTS -SECTION-D MCQs (DARPAN BASED ON TEXTBOOK)
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  2. At which angular frequency of source, current in series LCR A.C. circu...

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  3. When resonance takes place in series LCR A.C. circuit,

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  4. For one series LCR A.C. circuit, voltages across L, C and R are each 1...

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  5. For resonance in above circuit angular frequency and amplitude of curr...

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  6. The value of the Q-factor in an L-C-R series circuit is ……..

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  7. What is the rms value of the current for A current I=100 cos (200t + 4...

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  8. Resonance frequency for L-C-R, AC series circuit is f0= ……

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  9. For L-C-R, A.C. circuit resonance frequency is 600 Hz and frequencies ...

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  10. For series L-C-R circuit, L = 10mH and C = 10^(-7) F If resonance freq...

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  11. The current from an A.C. source is given by I = 2cos(omegat + phi) the...

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  12. For an L-C-R series circuit, the Q-factor is …

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  13. 20Omega resistor is connected with the A.C. source of V = 282sin (120 ...

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  14. The sharpness of an L-C-R series resonance curve …...

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  15. The value of half power bandwidth of resonance curve of L-C-R series c...

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  16. Q - factor for resonance curve of L-C-R series circuit is defined as ....

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  17. In a series L-C-R circuit R = 100Omega, L = 1H and C= 1 mu E The half ...

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  18. A 10Omega resistance, 5mH inductor and 10muF capacitor are joined in s...

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  19. In a series L-C-R, A.C. circuit, V1, V2 and V3 are the voltmeters conn...

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