Physics

Problem

A vertical straight wire in a laboratory carries a steady current of 5.0 A. Take

\mu_0 = 4\pi \times 10^{-7}\,\text{T\,m\,A}^{-1}

wherever required. a. (i) Calculate the magnitude of the magnetic field at a point

2.0\,\text{cm}

horizontally from the wire. b. (ii) If the current through the wire is doubled, what will be the magnetic field at the same point?