Question

The time taken for the magnetic energy to reach 25% of its maximum value, when a solenoid of resistance R, inductance L is connected to a battery, is

Answer 1

Answer:

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Explanation:

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Answer 2

Answer:

Hi friends

Explanation:

Magnetic energy=1/2Li²=25%

ME=25%=io/2

i = i0(1 - R-Rr/L)

t = L/Rln2

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