Question

A very long straight wire carries a current 5.2 A. What is the magnitude of the magnetic field at a distance 3.1 cm from the wire? [ µ₀ = 4π × 10^-7 T∙m/A]

Answer 1

Data : I = 5.2 A, a = 0.031 m, \(\cfrac{\mu_0}{4\pi}\)= 10^-7 T∙m/A The magnetic induction,

= 3.35 × 10^-5 T