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

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

Two circuits $A$ and $B$ are connected to identical d.c. sources each of e.m.f. $10 \ V$. Self-inductances of circuits $A$ and $B$ are respectively $L_A = 10 \ H$ and $L_B = 10 \ mH$. The total resistance of each circuit is $40 \ \Omega$. The ratio of energy consumed in circuit $A$ and circuit $B$ to build up the current to steady value is

$A$ coil with resistance $20\, \Omega$ and inductance $5\, H$ is connected to a $100\, V$ battery. The energy stored in the coil will be .... $J$.

$A$ solenoid of inductance $2 \ H$ carries a current of $1 \ A$. What is the magnetic energy stored in the solenoid (in $J$)?

The energy stored in a $50 \, mH$ inductor carrying a current of $4 \, A$ will be $J$.