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ninjarawr

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## Homework Statement

A rectanglular loop consists of 4 turns of wire carrying a current of 2.7 A. The loop is in the x-y plane, and the direction of flow of the current is shown in the figure. The loop has dimensions a = 1 cm and b = 6 cm. Consider a uniform magnetic field of strength 2.3 × 10-4 T in x, y, or z directions.

If the uniform field of 2.3 × 10-4 T is along the +x axis, find the magnitude of the torque acting on the loop and the total force on side a and b.

Diagram:

http://uploadpic.org/view-pic.php?img=100601"

http://uploadpic.org/view-pic.php?img=100601

## Homework Equations

t = NIABsin(theta)

B=unI (n= # of turns, u = 4 * 3.14 * E-7)

F=ILBsin(theta)

## The Attempt at a Solution

-I found torque using the above equation, and it was 1.49E-6

-Fb is simply 0 because it is parallel to the magnetic field

-but I have NO IDEA how to solve for Fa. I tried using F=ILBsin(theta), (=2.7*.1m*2.3E-4) and it rejects my answer. I also tried =2.7*.1m*2.3E-4*2.

Please help me find Fa?

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