• Best of luck to the class of 2024 for their HSC exams. You got this!
    Let us know your thoughts on the HSC exams here
  • YOU can help the next generation of students in the community!
    Share your trial papers and notes on our Notes & Resources page
MedVision ad

Easy question about motor effect (1 Viewer)

espiritulol

Member
Joined
Nov 4, 2012
Messages
44
Location
potato
Gender
Female
HSC
2013
Screen shot 2013-02-20 at 2.52.39 PM.jpg

Hi hi, just a quick question on C and D of the image above. The correct answers are right and down, but I don't see how, someone care to explain?
 

someth1ng

Retired Nov '14
Joined
Sep 18, 2010
Messages
5,558
Location
Adelaide, Australia
Gender
Male
HSC
2012
Uni Grad
2021
Right and down are the correct answers - use your right hand rule.

C. Thumb pointing out of the page (direction of the current), fingers pointing down (magnetic flux) and thus, palm facing to the right (force).
D. Thumb pointing into the page (direction of the current), fingers pointing to the right (magnetic flux) and thus, palm facing down (force).

Just so you know, this is the right hand palm rule: http://upload.wikimedia.org/wikipedia/commons/6/6f/Right_Hand_Rule_vBF2.PNG
Where:
F=force (palm)
B=magnetic flux
v=direction of positive charge OR direction of conventional current
 
Last edited:

Users Who Are Viewing This Thread (Users: 0, Guests: 1)

Top