View Full Version : magnetism
athenaroa
Mar17-04, 04:57 PM
A long straight wire carries a (+) current of two amps in a direction 30 deg W of N. At apoint 0.5 m from the wire( in a direction 60 deg S of W) the magnetic field that it creates has size of how many Tesla.
The magnetic field that an "inifite" current-carrying wire creates is:
B = \frac{\mu_0I}{2\pi r}
I being the current that it carries, r being the distance from the wire and \mu_0 = 4\pi * {10}^{-7}
HallsofIvy
Mar18-04, 06:23 AM
As Chen pointed out, the answer depends only on the distance, which you are given. The angles given are irrelevant.
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