Unformatted text preview: because the apparatus will be in the same direction as the magnetic field lines. 3. What two parameters can be varied in this experiment to change the radius of the electron beam? Explain how each of these parameters affects the radius. 4. List the potential sources of error for this experiment and describe what measures can be taken to eliminate or minimize each of them. 5. Use Eq. 6 to find the magnitude of the magnetic field B needed to bend the electron into a circular path of radius r=0.5 cm when the accelerating voltage is 50 volts. 6. Calculate the current in the Helmholtz coils needed to produce the magnetic field estimated in question 7. You will use this estimate to set the ammeter to the proper scale in the experiment....
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- Fall '08