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Olympiad workbook

Exam: Olympiad workbook
Subject: NSEP
Chapter: Alternating Current

Olympiad workbook · NSEP · Alternating Current

DC emf of 15 V is applied to a circuit containing 5 H inductance...

DC emf of 15 V is applied to a circuit containing 5 H inductance and

10 \Omega

resistance in series at

\mathrm{t}=0

. The ratio of the currents in the circuit at

t=0.5 \mathrm\sec

and at

t=1.0 \mathrm\sec

is

Options

A $\frac{\mathrm{e}^2}{\mathrm{e}^2-1}$
B $\frac{\sqrt{\mathrm{e}}}{\sqrt{\mathrm{e}}-1}$
C $\frac{\mathrm{e}}{\mathrm{e}+1}$
D $\frac{1}{\mathrm{e}}$

Correct answer

C. $\frac{\mathrm{e}}{\mathrm{e}+1}$

Step-by-step solution

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