When a coil is connected across a 20 ~V dc supply, it draws a current of 5 ~A. When it is connected across 20 ~V, 50 ~Hz ac supply, it draws a current of 4 ~A. The self inductance of the coil is _ _ _ _ _ mH. (Take π=3)

Electromagnetic Induction and Alternating Currents: JEE Main 2024 Physics question

JEE Main 2024 · 9 Apr, Morning shift · Q51

JEE Main 20249 Apr, Morning shiftPhysicsMediumElectromagnetic Induction and Alternating Currents149× since 2002

When a coil is connected across a

20 \mathrm{~V}

dc supply, it draws a current of

5 \mathrm{~A}

. When it is connected across

20 \mathrm{~V}, 50 \mathrm{~Hz}

ac supply, it draws a current of

4 \mathrm{~A}

. The self inductance of the coil is __________

\mathrm{mH}

. (Take

\pi=3

)

Your answerType your answer. Integers and decimals are accepted.

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