ElectroMagnetic InductionHard
Question
A coil of inductance 300 mH and resistance 2Ω is connected to a source of voltage 2V. The current reaches half of its steady state value in -
Options
A.0.05 s
B.0.1 s
C.0.15 s
D.0.3 s
Solution
I = I0 (1- e-t/τ) ⇒ 
= I0 (1 - e-t/τ)
⇒ t =
= 
(0.693) = 0.1s
= I0 (1 - e-t/τ) ⇒ t =
= (0.693) = 0.1s Create a free account to view solution
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