Problem on the magnetic force on a wire

[electrohau5]

Homework Statement

A wire 42.1 cm long carries a 0.660 A current in the positive direction of an x-axis through a magnetic field with an x component of zero, a y component of 0.000330 T, and a z component of 0.00840 T. Find the (a) x, (b) y, and (c) z components of the magnetic force on the wire.

Homework Equations

Force on a wire:
F=i*(crossP(L,B))

The Attempt at a Solution

Seems simple, but I am getting a wrong answer.

a. 0 (this is correct)
b and c. 0.660*(crossP({0.66,0,0}, {0,0.000330,0.00840})={0,-0.00365904,1.43748E-4}

and niether -0.00365904 (y component, part b),
nor 1.43748E-4 (z component, part c)

are correct.

 

[TSny]

F=i*(crossP(L,B))

0.660*(crossP({0.66,0,0}, {0,0.000330,0.00840})={0,-0.00365904,1.43748E-4}

Check the number that you used for the length of the wire.

 

[rude man]

Do your cross-products again. Show us the details thereof. (Set up the customary determinant rather than your more obscure notation).

EDIT: follow TSny's advice! I hadn't noticed that you omitted the length.

 

[electrohau5]

Check the number that you used for the length of the wire.

Thanks! I did not see that one!