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 :

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 :, L R l n 5, infinite, L R l n 2, L R l n 10

MARKS App · Accepted Answer

Magnetic energy = 1 2 L i 2 = 25 % M E ⇒ 25 % ⇒ i = i 0 2 i = i 0 1 - R - R t / L for charging t = L R l n 2

Search any question & find its solution

Looking for more such questions to practice?