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In an A.C. circuit, the capacitive react...

In an A.C. circuit, the capacitive reactance is defined as ........

A

`Z_C=jomegaC`

B

`Z_C=-1/(jomegaC)`

C

`Z_C=j/(omegaC)`

D

`Z_C=1/(jomegaC)`

Text Solution

Verified by Experts

The correct Answer is:
D
`Z_C=-j/(omegaC)`
`therefore Z_C=(-j^2)/(jomegaC)` [ `because` multiply and divide by j]
`therefore Z_C=(-1(-1))/(jomegaC)=1/(jomegaC)`
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KUMAR PRAKASHAN-ALTERNATING CURRENTS -SECTION-D MCQs (DARPAN BASED ON TEXTBOOK)
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  2. In an A.C. circuit, the capacitive reactance is defined as ........

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  3. The value of capacitive reactance is given by ……

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  4. Impedance in L-C-R series circuit is a ……... number. Its value is give...

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  5. In an A.C. circuit in 1 second current reduces to zero value 120 times...

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  6. The displacement in Newton law corresponds to …... is electrical quant...

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  7. Which of the following gives a correct correspondence between electric...

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  8. Which of the following does give a correct correspondence between an e...

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  9. On decreasing the angular frequency of A.C. source used in L-C-R serie...

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  10. When does the impedance of a series L-C-R (AC) circuit become minimum ...

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  11. Current of 50/pi Hz frequency is passing through an A.C. circuit havin...

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  12. An alternating voltage given as V=200sqrt2sin (100t)V is applied to a ...

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  13. A coil of inductance L and resistance R is connected to an A.C. source...

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  14. One inductor (of inductance L henry) is connected to an A.C. source, t...

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  15. If angular frequency of an A.C. source used in L-C-R circuit is decrea...

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  16. If angular frequency of an A.C. source used in L-C-R circuit is increa...

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  17. The force constant corresponds to …... electric quantity.

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  18. A coil having inductance of 1 mH is connected to an A.C. source, its i...

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  19. The reactance of a capacitor of 1/pi in are A.C. circuit having frequ...

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  20. An LCR series circuit with L =0.5H, C=10xx10^(-6) F, R=100 Omega is c...

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