Energy in a current carrying coil is stored in the form of

Energy stored in a coil of self-inductance $40 \, mH$ carrying a steady current of $2 \, A$ is.....$J$

An inductor may store energy in

Average energy stored in a pure inductance $L$ when a current $i$ flows through it,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

If the current in an $LR$ circuit is reduced to half,what will be the energy stored in it?