Question

Calculate the magnetic flux density if the magnetic field strength is 2A/m.

(a) 4*pi*10^-7T

(b) 8*pi*10^-7T

(c) 10*pi*10^-7T

(d) 12*pi*10^-7T

I had been asked this question in unit test.

This is a very interesting question from Permeability of Free Space or Magnetic Constant in division Simple Magnetic Circuits of Basic Electrical Engineering

Answer 1

Correct choice is (b) 8*pi*10^-7T

Easy explanation: We know that:

µ0=B/H

Substituting the value of H from the question, we get B = 8*pi*10^-7T.