Particle detectors and Flemming LH rule

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SUMMARY

The discussion centers on the application of Fleming's Left-Hand Rule (LH Rule) in determining the direction of force in particle detectors. The user presents two scenarios: (a) current flowing upwards with force directed left, and (b) current flowing right with force directed upwards. The key aspect is understanding the orientation of the magnetic field, current, and resultant force, with a consensus leaning towards scenario (a) as the correct interpretation. The user also expresses uncertainty about distinguishing between the two scenarios effectively.

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Homework Statement


http://www.thestudentroom.co.uk/attachment.php?attachmentid=118892&d=1329155852

(the most important aspect is the CHARGE)

Homework Equations




The Attempt at a Solution


so we know that the first finger (using flemming LHR) is into the page
but there are two possibilities:
(a) current up and force left
OR
(b) current right and force up

WHICH one would I use and why?
I have never really been able to distinguish the two from each other with regards to LH rule in questions like this

thanks
 
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btw I think C is +ive
who agrees?
 

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