Question

A straight wire of length l is bent into semi circular loop used by astronaut to deduce an expression for magnetic field

Answer 1

Explanation:

The straight wire of the length “L” is bent into the semi-circular loop. To find this expression for a magnetic field at it’s center due to the current “I” passing through it.

We will be using the “Biot Savart’s Law” to find a magnetic field.  

Where, I denotes the current, R is the radius of the wire, “l” is a length of the wire and is also constant of permeability.  

Answer 2

Answer:

hlw..

Tnx for free points....