Question

5.12 a permanent magnet in the shape of a thin cylinder of length 10 cm has m = 106 a/m. Calculate the magnetization current im.

Answer 1

Answer:

According to the problem, M(intensity of magnetisation) = 106 A/m.

l(length) = 10 cm = 10 × 10-2m = 0.1 m

and Im = magnetisation current

Here we know that M = Im/l

IM = M × l

= 106 × 0.1 = 105A

Important point: Here, M = Intensity of magnetisation as its units are given as A/m.