I have a magnetics exam coming up, and my professor said thatwe will NOT be calc
ID: 1727585 • Letter: I
Question
I have a magnetics exam coming up, and my professor said thatwe will NOT be calculating problems directly using theBiot-savart law and Amperes law, but we will be using the resultsof those laws to compute answers to questions. So my questionis what will he expect to compute with just the results of thelaws? and exactly what does the Biot-savart law solve for as wellas Amperes, is it magnetic field? I hope my question is not confusing. Thank you. I have a magnetics exam coming up, and my professor said thatwe will NOT be calculating problems directly using theBiot-savart law and Amperes law, but we will be using the resultsof those laws to compute answers to questions. So my questionis what will he expect to compute with just the results of thelaws? and exactly what does the Biot-savart law solve for as wellas Amperes, is it magnetic field? I hope my question is not confusing. Thank you.Explanation / Answer
The Biot-Savart law and Amperes law gives us special derivationsthat we could use in special cases. So you are correct when you askthat the results of using biot-savart and amperes law are magneticfields due to currents. A few derivations come from Biot-savart including: -Magnetic fields due to currents in long straight wires, semiinfinite wires, or fields at the center of a circular arc -magnetic fields of a coil A few derivations that come from Amperes law are: -magnetic fields due to currents in long straight wires (like thebiot savart) and fields INSIDE long straight wires. -solenoids and toroids I'm going to assume your professor will just want you to know thosespecial case equations and not actually derive them. I hope thishelps!
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