Two different coils have self inductances L1 = 8 mH and L2 = 2 mH. The current in one coil is increased at a constant rate. The current in the second coils is also increased at the same constant rate. At a certain instant, the power given to the two coil is the same. At that instant of time, if W1 and W2 are the energies stored in the first and the second coil, respectively, the W1 : W2 is
(a) 1 : 2 (b) 2 : 1 (c) 4 : 1 (d) 1 : 4
