ESE 2021 Technical Quiz 70 || Magnetostatics-1

The relation between the magnetic vector potential  and the magnetic field intensity can be given by

An Iron bar having cross section area of 0.5 m² has 10^-4 Wb of magnetic flux in it. If µ_r = 1000, what is the magnetic field intensity in the bar is

Suppose we have a radiating field given by:

A/m, and it is in free space.

Now, determine the value of magnetic flux (in weber) that crosses the surface which is defined in the area given by: 0 and 0.

Which one of the following is the CORRECT expression for Biot-Savart law?