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If a steady magnetic field exerts a force on a moving charge, that force is directed.

User Atin
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Answer:

F = q V X B = I L X B are descriptions of the force on a moving charge

Suppose that a battery terminal is + on the left connected by a wire to a - charge on the right, the X indicates a cross product so the force on the moving charge is perpendicular to both the magnetic field and the moving charge.

If one wraps the hand around the wire with the thumb pointing in the direction of the "conventional" current, the induced field will be in the direction of the fingers - V X B is the cross product of the moving charge and the magnetic field;
Note q V = q L / t = (q / t) * L = I L

User Jedivader
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