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A coil of inductance L and resistance R ...

A coil of inductance L and resistance R is connected to an A.C. source of V volt. If the angular frequency of the A.C. source is equal to `omega "rads"^(-1)`, then the current in the circuit will be ………

A

`V/R`

B

`V/L`

C

`V/(R+L)`

D

`V/sqrt(R^2+omega^2L^2)`

Text Solution

Verified by Experts

The correct Answer is:
D
`I=V/"|Z|"` but `|Z|=sqrt(R^2+omega^2L^2)`
`therefore I=V/sqrt(R^2+omega^2L^2)`
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KUMAR PRAKASHAN-ALTERNATING CURRENTS -SECTION-D MCQs (DARPAN BASED ON TEXTBOOK)
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  13. The expression for the A.C. supply voltage of 234V and frequency of 50...

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  17. When 1 muF capacitor is connected across V = 100 sqrt2 sin(100t)Volt, ...

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  18. Unit of omegaC is

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