- #1

- 188

- 0

## Homework Statement

The two wires shown in Figure P19.38 carry currents of 5.00 A in opposite directions and are separated by 10.0 cm. Find the direction and magnitude of the net magnetic field at the following locations.

http://www.webassign.net/sf5/p19_38.gif

(a) at a point midway between the wires

(b) at point P1, 10.0 cm to the right of the wire on the right

(c) at point P2, 20.0 cm to the left of the wire on the left

## Homework Equations

B = UoI/2pi(d)

## The Attempt at a Solution

I tried using this formula and finding each one but it does not work. I am not sure if I am doing this correct but this is what i have tried for b and c

B = (4pi x 10^-7)(5)/(2pi)(.10)

B = .00001 T which is incorrect.

then i tried

B = (4pi x 10^-7)(5)(5)/(2pi)(.10)

B = .00005 T

which is also incorrect.

not sure what i am doing wrong but i decided to input 5 x 10^-6 it said it was correct for part b.

any help would be great.