An inductor may store energy in

The magnetic potential energy stored in a certain inductor is $64 \times 10^{-3} \ J$,when the current in the inductor is $80 \ mA$. The inductance of this inductor is: (in $H$)

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 $J$)

$A$ $100 mH$ coil carries a current of $1 A$. Energy stored in the form of magnetic field is (in $J$)

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

Assertion : If the current in a solenoid is reversed in direction while keeping the same magnitude,the magnetic field energy stored in the solenoid remains unchanged.
Reason : Magnetic field energy density is proportional to the magnetic field.