# Homework Help: Magnetic force on current carrying wire

1. Apr 1, 2017

### superslow991

1. The problem statement, all variables and given/known data

A wire along the z-axis carries a current of 6.8 A in the +z direction. Find the magnitude and direction of the force exerted on a 6.1-cm long length of the wire by a uniform magnetic field with magnitude 0.36 T in the -x direction.

2. Relevant equations
F=I(LxB)

3. The attempt at a solution
Now i already know the answer but i am confused as to what the direction the Force, field, and length are. I know this equation is dealing with cross product but if someone could explain to me in detail the direction of the Force (F), the field (B), and the length (L).

2. Apr 1, 2017

3. Apr 1, 2017

4. Apr 1, 2017

### superslow991

Thanks
So if im reading right the direction of the Force is perpendicular to both the length and the magnetic field.
The length is in direction of the current in the wire
The field is?

5. Apr 1, 2017

### kuruman

Correct.
Correct.
Perpendicular to both the length and the force.

6. Apr 1, 2017

Thanks a lot

7. Apr 1, 2017

### Staff: Mentor

Looks to me like they tell you the direction of the field.
(and the direction of the current)