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An electric lamp which runs at 100 V DC ...

An electric lamp which runs at `100 V DC` and consumes `10 A` current is connected to `AC` mains at `150 V, 50 Hz` cycles with a choke coil in series. Calculate the inductance and drop of voltage across the choke. Neglect the resistance of choke.

Text Solution

Verified by Experts

The correct Answer is:
A, C

`V_L=sqrt(V^2-V_R^2)`
`=sqrt((150)^2-(100)^2)`
`=111.8V`
`V_L=IX_L=I(2pifL)`
`:. L=V_L/(2pifI)=111.8/(2pixx50xx10)`
`=0.036H`
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