Question

A scanning electron microscope uses a uniform 15.0-kN/C electric field to accelerate electrons horizontally toward the subject to be imaged. After travelling 5.0 cm the electrons are accelerated to a speed of 1.62x107 m/s. The next step is to deflect the electrons so that they can scan across the sample—hence the scanning electron microscope. To accomplish this, the electrons are directed between a pair of oppositely charged parallel plates, which produce a uniform electric field of 6.42x103 N/C perpendicular to the electron beam. This field extends for 3.5 cm along the electron’s path. 

Part A For the scanning electron microscope described above, find the electron’s vertical displacement. Express your answer to two significant figures and include the appropriate units.

Part B What would be the electron’s vertical displacement if the scanning electric field were reduced to 3.33×103 N/C ? Express your answer to two significant figures and include the appropriate units

Answer 1