A second example of Biot-Savart is with loops of current. We know that any current will produce a magnetic field, but a circular loop of current produces a linear magnetic field along its central axis. This is like the Helmholtz coil we use in the lab. Check out how to set this up and get an expression for that central axis.
Showing posts with label biot-savart law. Show all posts
Showing posts with label biot-savart law. Show all posts
Tuesday, March 6, 2012
How to do Biot-Savart for Straight Wires with Ends
We have done some work already with Ampere's law for finding B-fields created by long wires, solenoids (with no ends) and toroids. But in reality wires have ends, and we must use the real thing, Biot-Savart, to get those magnetic fields. Check this out for finding the integral for a straight wire with ends.
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