Question

If a wire of length 4 meter is carrying a current of 2 Ampere,calculate the magnetic field strength at a distance of 3 meter from the wire

Answer 1

Answer

Magnetic field due to wire is given by

$B=\frac{\mu_0I}{2\pi r}$

$B=\frac{4\pi \times 10^{-7}\times 2}{2\pi \times3}=1.33 Tesla$