SOLUTION: How might a loop of wire carrying a current be used as a compass? Can it be used as a compass to distinguish the north and south?

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Question 1202085: How might a loop of wire carrying a current be used as a compass? Can it be used as a compass to distinguish the north and south?
Found 2 solutions by math_tutor2020, mananth:
Answer by math_tutor2020(3817) About Me  (Show Source):
You can put this solution on YOUR website!

This question is more suited to physics homework sites (eg: physicsforums.com) but the basic idea is this:
A moving current through a coiled wire causes a magnetic field, which interacts with the earth's magnetic field.

Further Reading
https://www.khanacademy.org/science/physics/magnetic-forces-and-magnetic-fields/magnetic-flux-faradays-law/a/what-is-faradays-law

Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!


From fig you can deduce which face is North
If the directionof current changes the polarity is reversed