The magnetic field at 8 cm distance from a long straight wire, carrying is 0.2x10^-5 t. how much is the electric current in the wire?

The electric current in the wire is 0.8 A

Explanation:

We solve this problem by applying the formula of the magnetic field generated at a distance by a long and straight conductor wire that carries electric current, as follows:

B= Magnetic field due to a straight and long wire that carries current

u= Free space permeability

I= Electrical current passing through the wire

a  = Perpendicular distance from the wire to the point where the magnetic field is located

Magnetic Field Calculation

We cleared (I) of the formula (1):

Formula(2)

a  =8cm=0.08m

We replace the known information in the formula (2)

I=0.8 A

The electric current in the wire is 0.8 A

an obstruction

the body's situation won't change the forces are equal opposit and on the same body