Question

A 25 cm long solenoid has radius 2cm and 500 total number of turns. It carries a current of 15 a. If it is equivalent to a magnet of the same size and magnetization (magnetic moment/volume), then is

Answer 1

Answer:

The answer will be 30000 A/m

Explanation:

According to the problem the length of the solenoid is 25 cm

radius is 2 cm and total number of turns,n = 500

The wire carries current ,i = 15 a

now to calculate the M is

M= (magnetization moment/volume)

   =  (n x i x a)/a x l

  = nx i/l

 = 500 x 15/ 25 x 10^(-2)

=  30000 A/m