Question

a solenoid has 10 to the power 3 turns per unit length on passing a current of 2 ampere in magnetic induction is measured to be 45 Weber per metre square calculate magnetic suspect ability of code​

Answer 1

Answer:

We know that,

B=u(H+M). & X=M/H

Given, B=4π Wbm^-2

Therefore,

4π=4π*10^-7 * (1+X)

10^7=1+X

Therefore, 10^7-1 = X

X~10^7