Originally posted by sampojo
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I haven't seen anything wrong in the video yet. I'll take a closer look on a larger screen. Have you verified your compass hasn't been remagnetized by testing it to point correctly towards geographical North? Also please tell coil resistance and turns. Is the coil isolated from the core (not grounded)?
I've used the textbook right-hand rule thousands of times and never been wrong. Just a few hours ago I put 45 Amps thru an 8 turn air core coil and it attracted the proper end of the compass pointer per the textbook right-hand rule. The books are correct.
Have you got another coil you can test with that compass?
Regards,
bi
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