What is the formula for the magnetic field generated by a current-carrying wire at a distance r, in terms of the current I, the distance r, and the permeability of free space represented by the keyword mu naught/4pi?

Answer 1

The formula for the magnetic field generated by a current-carrying wire at a distance r is given by B (mu naught I) / (2 pi r), where B is the magnetic field strength, I is the current in the wire, r is the distance from the wire, and mu naught is the permeability of free space.