Transcribed Image Text: The magnetic force dFB on a infinitesimal segment of current I is

dF = I dī × B

Where dL is the displacement vector of the infinitesimal current segment. The

total magnetic force on a finite current segment is

dL

dF

I

F = 1S (dL x B)

1. If the magnetic field is uniform in space the magnetic force on current

simplifies to FB = I (L × B). What is vector L in this expression? Choose

one.

L is the length of the current segment

L is the vector from the point where the current enters the uniform field to the point where the current leaves

the uniform field.

L is the current.