- #1

fball558

- 147

- 0

**current in a wire??**

## Homework Statement

A long, straight wire carries a current of I_1 = 20 A as shown below. A rectangular coil with two sides parallel to the straight wire has sides 5 cm and 10 cm with the near side a distance 2 cm from the wire. The coil carries a current of I_2 = 4 A.

PIC IS ATTACHED!

Find the force on each segment of the rectangular coil due to the current in the long, straight wire.

i found all but right and net (if i find right i can get net)

top 2.0044e-5 N

left 8e-5 N

right

bottom 2.0044e-5 N

net

i used

((I_2 * Uo* I_1 ) / 2pi ) * ln(7/2)

i know that the force will be pointing left but dont know its magnitude?

does anyone know how this works and if so can you help me through the problem?

thanks!!