Question

The magnetic material of volume 30 cm cube is placed in a magnetic field of intensity 5 oersted. the magnetic moment produced due it is 6 amp-m2. the value of magnetic induction will be. 1)0.2517T 2)0.025T 3)0.0025T 4)25T​

Answer 1

Answer:

Option 1 is the correct answer.

Explanation:

H=5×10^3/4π AM^-1,

I=M/V,

=6/30×10^-6,

2×10^4 AM,

H=397.887 AM,

B=μ0(H+I)=4π×10^-7(397.887+2×10^5),

4π×10^-4×200.397×10³,

B=0.2517 Tesla.

Hope it helps you.