XavierRules32431 XavierRules32431

23-01-2024
Physics

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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 :
A. (L/R)ln10
B. (L/R)ln5
C. (L/R)ln2
D. infinite

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