Solve this: A solenoid have the self inductance 2H.If length of the solenoid is doubled having turn density and area constant then new self inductance is:- (1)4 H (2) 1 H (3) 8 H (4) 0.5 H Share with your friends Share 20 Vijay Shankar Yadav answered this Dear Student, We have L=μN2Alby increasing l by factor 2 L will become half So now L=1H Regards -63 View Full Answer