Two solenoids, a and b , are wound using equal lengths of the same kind of wire. the length of the axis of each solenoid is large compared with its diameter. the axial length of a is twice as large as that of b , and a has twice as many turns as b. what is the ratio of the inductance of solenoid a to that of solenoid b? (a) 4 (b) 2 (c) 1 (d) 1/2(e) 1/4