Question

In the circuit shown in figure, time constant and steady state current will be

• A. $0.25 \, s, \, 0.75 \, A$
• B. $0.75s,0.25A$
• C. $0.25 \, s, \, 0.25 \, A$
• D. $0.5 \, s, \, 0.5 \, A$

Answer 1

Answer: (A)

Equivalent resistance is $8 \, \Omega$
Therefore time constant is,
$\tau=\frac{L}{R_{e q}}$
$\tau=\frac{2}{8}=0.25 \, s$
And the steady-state current is,
$i_{0}=\frac{\epsilon }{R}$
$i_{0}=\frac{6}{8}=0.75 \, A$