An inductance L and a resistance R are first connected to a battery. After somtime the battery disconnected but L and R remain connected in a closed circuit. Then the current reduces to 37% of its initial value in:

A: RL sec B: R/L sec C: L/R sec D: 1/LRsec

Question

An inductance L and a resistance R are first connected to a battery. After somtime the battery disconnected but L and R remain connected in a closed circuit. Then the current reduces to 37% of its initial value in:

A: RL sec B: R/L sec C: L/R sec D: 1/LRsec

ROSHAN MUJEEB · Answer

When battery disconnected current through the circuit start decreasing exponentially according toi=i0e&minus;Rt/Li=i0e-Rt/L. &rArr;0.37i0=i0e&minus;Rt/L&rArr;0.37=1e=e&minus;Rt/L&rArr;t=LR

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An inductance L and a resistance R are first connected to a battery. After somtime the battery disconnected but L and R remain connected in a closed circuit. Then the current reduces to 37% of its initial value in: A: RL sec B: R/L sec C: L/R sec D: 1/LRsec

An inductance L and a resistance R are first connected to a battery. After somtime the battery disconnected but L and R remain connected in a closed circuit. Then the current reduces to 37% of its initial value in:

A: RL sec B: R/L sec C: L/R sec D: 1/LRsec

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An inductance L and a resistance R are first connected to a battery. After somtime the battery disconnected but L and R remain connected in a closed circuit. Then the current reduces to 37% of its initial value in: A: RL sec B: R/L sec C: L/R sec D: 1/LRsec

An inductance L and a resistance R are first connected to a battery. After somtime the battery disconnected but L and R remain connected in a closed circuit. Then the current reduces to 37% of its initial value in:A: RL sec B: R/L sec C: L/R sec D: 1/LRsec

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An inductance L and a resistance R are first connected to a battery. After somtime the battery disconnected but L and R remain connected in a closed circuit. Then the current reduces to 37% of its initial value in:

A: RL sec B: R/L sec C: L/R sec D: 1/LRsec