The energy stored in a $50 mH$ inductor carrying a current of $4 A$ is (in $J$)

When a current of $4 \ mA$ passes through an inductor,if the flux linked with it is $32 \times 10^{-6} \ T \ m^2$,then the energy stored in the inductor is

If a current of $4$ $A$ produces a magnetic flux of $3 \times 10^{-3}$ $Wb$ through a coil of $400$ turns, the energy stored in the coil will be: (in $J$)

If a current flowing in a coil is reduced to half of its initial value,the relation between the new energy $(E_2)$ and the original energy $(E_1)$ stored in the coil will be

When a current $I$ flows through a coil,it stores the energy $E_1$ in it. Now the current is reduced to $I/2$,the energy stored in the coil becomes $E_2$. The change in the energy is

The magnetic energy stored in an inductor of inductance $4 \ H$ carrying a current of $1.5 \ A$ is