Question

Consider an electrical circuit containing a two way switch ' $S'$. Initially $S$ is open and then $T_{1}$ is connected to $T_{2}$. As the current in $R=6\, \Omega$ attains amaximum value of steady state level, $T_{1}$ is disconnected from $T_{2}$ and immediately connected to $T_{3}$. Potential drop across $r=3\, \Omega$ resistorimmediately after $T_{1}$ is connected to $T_{3}$ is______ $V$.
(Round off to the Nearest Integer)

Answer 1

When $T_{1}$ and $T_{2}$ are connected, then the steady state current in the inductor
$I=\frac{6}{6}=1\, A$
When $T_{1}$ and $T_{3}$ are connected then current through inductor remains same.
So potential difference across $3\, \Omega$
$V=I r=1 \times 3=3$ volt