Question

0. What is the magnetic movement M if the pole strength (m) is 100A and the distance
between the poles (26) is 4 cm?
a) 3 x 102 Am
c) 5 x 10-2 Am?
b) 4x 102 Am
d) 6 x 102 Am?​

Answer 1

Answer:

The answer is 4 Am.

Step-by-step explanation:

The formula of magnetic moment is

m= pole strength ×length of the magnet

Given data:

Pole strength (m)  = 100A

Distance = 4cm = 4 /100 = 4 x 10^-2

M=m x d

 = 100 x 4 x10^-2

 = 400 x 10^-2

  =  4 x 10^2 x 10^-2

After cancellation

 M = 4 Am

Thus the magnetic moment between the poles is 4.