Find the value of `R` for which no current will flow through `5V` battery

Find current which is passing through battery .

Find current through 4V battery

Find current which is passing through battery.

Find current which is passing through battery.

Find current which is passing through battery.

A circuit contains an inductor of value 2H as shown at t= 0 no current was flowing through battery. Find the energy stored in inductor at t=4 sec.

For a circuit shown in Fig. find the value of resistance R_2 and current I_2 flowing through R_2