- #36
Tanya Sharma
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Wow ! I can't believe I topped the class 
Have to say the Prof. is really cool.
Have to say the Prof. is really cool
.Ampere's Law and Conductor: Finding ∫B.dl for a Semicircle in the x-z Plane
- Thread starter Tanya Sharma
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- Ampere's law Conductor Law
In summary: The magnetic field due to straight wire BA at the circular path is zero because there is no current flowing through the loop. The magnetic field due to semi circular wire AB is positive because it has a bigger radius than the straight wire. The total magnetic field is positive because it has a sum of two positive fields.
- #37
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TSny said:Well, I'm retired. So, I refuse to do any more grading!
But, if you were to use Tanya's suggested grading scheme, then you both passed. Tanya gets A+ on this one. (That is, her answers agree with mine, anyway.)
Tanya's answers for b and c seem to have the wrong sign, otherwise I agree.
A downward current gives a positive B circulation as I understand it.
- #38
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Tanya Sharma said:Wow ! I can't believe I topped the class
Have to say the Prof. is really cool
Congrats! And yes, we owe Dr. T. one - or actually several by now!