Electrons in a Particle Beam Each Have a Kinetic Energy

question 48

Multiple Choice

Electrons in a particle beam each have a kinetic energy of 3.2 *10 ^{- 17} J. What is the magnitude of the electric field that will stop these electrons in a distance of 0.05 m? (e = 1.6 * 10 ^{- 19} C)

• A) 2000 N/C
• B) 4000 N/C
• C) 200 N/C
• D) 1000 N/C

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