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.

An electric lamp which runs at `100 V DC` and consumes `10 A` current

1.	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.
Answer» Correct Answer - 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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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.

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