Direction of Magnetic Force on a Moving Charge?

AI Thread Summary
The discussion revolves around the application of the left-hand rule to determine the direction of magnetic force on a moving charge. The original poster believes the force should be directed into the page based on their understanding of current flow and charge movement. However, the mark scheme indicates the force is out of the paper, leading to confusion. Participants emphasize the importance of considering the type of charge involved, noting that the presence of an electron alters the expected direction of force. Clarification on the conventions of charge flow and magnetic force direction is sought to resolve the discrepancy.
Peter G.
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Hi,

So, applying the left hand rule I got a force into the page for the question attached. The markscheme, however, claims it is out of the paper.

Can anyone help me understand why?

Thanks!
 

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If I remember correctly, the convention for flow of current would be the direction in which a positive charge would travel if placed at that point. So the field would be to the left and the current would be downwards leading to the force being into the paper.
 
Yea, that's what I thought too! They must have forgotten they put an electron there...
 

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