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Suppose you do an experiment in which electrons come off a

Question: Suppose you do an experiment in which electrons come off a cathode and accelerate through 200V. Suppose these electrons enter a uniform magnetic field. They are moving perpendicular to it and bend as shown in Fig. 8.14.

a. What is the kinetic energy of the electrons? Give your answer in electron volts.

b. What is the direction of the force on them? Give your answer by drawing arrows on the diagram in several places.

c. What must be the direction of the magnetic field to bend the electrons as shown?

d. Explain how you figured out your answer to (c).

1541_8.14.png

Fig. - A beam of electrons accelerated through 200V bends in a magnetic field

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Physics: Suppose you do an experiment in which electrons come off a

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