A current 10 A is established in a long wire along the positive z-axis. Find the magnetic filed . At the point (1m, 0, 0).

Question

Philoid · Accepted Answer

Given:
Current : I = 10 A

Point is located along x-axis at 1 m.
Formula used:
Using Ampere’s Law for a current carrying straight wire:
Here, B is the magnitude of magnetic field, μ₀ is the permeability of free space and μ₀= 4π × 10^-7 T mA^-1 and d is the distance between the current carrying wire and the required point.
Substituting the values,

∴ B = 2× 10^-6 T
Hence, magnetic field at a point (1m, 0, 0) is 2× 10^-6 T.