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Physics
Physics
Problem
An emf of 20 V is applied at time
t
=
0
t = 0
t
=
0
to a circuit containing in series 10 mH inductor and 5
Ω
\Omega
Ω
resistor. The ratio of the currents at time
t
=
∞
t = \infty
t
=
∞
and at
t
=
40
t = 40
t
=
40
s is close to: (Take
e
2
=
7.389
e^2 = 7.389
e
2
=
7.389
) a. 1.06 b. 1.15 c. 1.46 d. 0.84
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