Question

A Practical Matter A power line carries a current of 350 A. What is the magnetic field in a house located 95 m away from the power line?

Answer 1

Gives

Current (I)=350A

Distance (r)=95m

We know that

$B=\frac{\mu_0 i}{2\pi r}$

Put value

$B=\frac{4\pi\times350}{2\pi\times95}$

$B=7.36T$