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Unformatted text preview: by your TA. The principle by which an energetic beam of electrons is generated using Flaments and voltages. Why the path of the beam is visible to the human eye (it would not be visible traveling through vacuum). You should be able to use your knowledge of the electrons charge to determine for your apparatus: The direction of the magnetic Feld in your apparatus that causes the electron to move in a circular path. The direction of the current in the coils required to make this magnetic Feld. 2 Equipment 1 EP-20 e/m Apparatus. 1 EP-20 Instruction Manual. PHY124 ELECTRON e/m Exp. 5 3 Procedure 1. Follow the instructions found in the EP-20 manual, measuring e m for 8 dierent combinations of accelerating voltage V , path radius r , and coil current I . 2. After you have produced a correct value for e m , call your lab TA over for an interview....
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