- #1

- 17

- 0

**[SOLVED] Magnetic Field due to a current loop**

## Homework Statement

A single loop of wire of radius 3 cm carries a current of 2.6 A. What is the magnitude of B on the axis of the loop at 2 cm?

## Homework Equations

B=[tex]\mu[/tex]/(4[tex]\pi[/tex]) * 2[tex]\pi[/tex](R^2)*I/(z^2+R^2)^(3/2)

## The Attempt at a Solution

I = 2.6 A

R = .03 m

z = .02m

I calculate .000031 T

It should just be a simple matter of plugging in numbers, but every time I use this equation it ends up being wrong. If anyone could tell me what I might be doing wrong it would be greatly appreciated.