A Beam of Electrons Moving in the +X Direction Encounters

A beam of electrons moving in the +x direction encounters a potential barrier that is 3.42 eV high and 0.78 nm wide.Each electron has a kinetic energy of 3.41 eV and the electrons arrive at the barrier at a rate of 500 electrons/s (500 electrons every second) .What is the average rate in electrons/s at which electrons pass through the barrier?

A) 435 electrons per second
B) 282 electrons per second
C) 225 electrons per second
D) 176 electrons per second
E) 65 electrons per second

Correct Answer:

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