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effect on electron in magnetic field |
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| Oct10-05, 06:42 AM | #1 |
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effect on electron in magnetic field
Here's a question that i'm quite confused about:
A uniform constant magnetic field is directed into the page. An electron of constant mass and charge follows a clockwise spiral of decreasing radius path. Is the particle spead increasing or slowing down? and Why? |
| Oct10-05, 06:59 AM | #2 |
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I see two forces here (sort of, one is a consequense of the other):
1st force (the real one): The electromagnetic force Look at what you have: B-field, velocity, charge (its an electron) 2nd force (implied in the motion): Centripital Force What the first force is doing. Set the two equal. See what happens when you vary radius. Don't forget Centripital force= mass x centripital acceleration That should get you through the problem. curly |
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