Magnetic Force -- Confused about the direction of the force

AI Thread Summary
The discussion centers on confusion regarding the direction of magnetic force in a physics problem. The user calculated the magnitude using the formula F=qvB but struggled with the direction, initially applying Fleming's left-hand rule and arriving at an outward direction. However, the correct answer indicates a downward force towards the south. Participants suggest using the corkscrew rule to clarify the relationship between the velocity vector and the magnetic field. Understanding the correct application of these rules is essential for determining the accurate direction of the magnetic force.
Devs

Homework Statement


upload_2017-10-29_17-45-4.png

Homework Equations

The Attempt at a Solution


Hi! I got the magnitude using F=qvB using information from the top of the qs. But the direction is confusing me. I used the Fleming's left hand rule but it sort of isn't giving me the right answer
 

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Devs said:
isnt giving me the right answer
What IS your answer and why do you claim it is wrong ?
 
BvU said:
What IS your answer and why do you claim it is wrong ?

I got an outward direction while the answer says downwards/towards south.
 
Devs said:
I got an outward direction
That would make it parallel to the current. The left- and right-hand rules relate three vectors which are mutually at right angles.
 
For this I learned the corkscrew rule: which way does the corkscrew go when you turn it from ##\vec v## to ##\vec B## ?
 

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