anonymous one year ago A 5.0 m portion of wire carries a current of 8.0 A from east to west. It experiences a magnetic field of 6.0 × 10^-4 T running from north to south. What is the magnitude and direction of the magnetic force on the wire? A. 1.2 * 10^-2 N downward B. 1.2 * 10^-2 N upward C. 2.4 * 10^-2 N downward D. 2.4 * 10^-2 N upward **is the solution choice A? @michele_laino

1. Michele_Laino

here is the situation described by your problem: |dw:1434870022530:dw|

2. anonymous

ok!

3. Michele_Laino

oops, I have made a n error: |dw:1434870146959:dw|

4. anonymous

ok:)

5. Michele_Laino

now the magnitude of the magnetic force F is: $\Large F = ILB = 8 \times 5 \times 6 \times {10^{ - 4}} = ...Newtons$

6. anonymous

ok! so we get 0.024!

7. anonymous

so either choice A or choice B! but it is moving downward right? so choice A is our solution?

8. Michele_Laino

it is option D, since the vector F is pointing out from the drawing plane toward the observer

9. anonymous

ohhhh okay! oops! :P thank you!!

10. Michele_Laino

:)