A cathode ray tube (CRT) is used to accelerate electrons in some televisions, co

Question

A cathode ray tube (CRT) is used to accelerate electrons in some televisions, computer monitors, oscilloscopes, and x-ray tubes. Electrons from a heated filament pass through a hole in the cathode; they are then accelerated by an electric field between the cathode and the anode (Fig. 16.31). After the electrons pass through the anode, they are moving at a speed of 7.2 106 m/s. They next pass between a pair of parallel plates. The plates each have an area of 2.00 cm by 2.00 cm and they are separated by a distance of 0.50 cm. The uniform electric field between them is 1.0 103 N/C and the plates are charged as shown. (a) In what direction are the electrons deflected? toward the negative plate toward the positive plate (b) By how much are the electrons deflected after passing through these plates? mm

Explanation / Answer

http://www.calderglen.s-lanark.sch.uk/CalderglenPhysicsWeb/documents/AH%20further%20Qs%20&%20solns%20unit%202&3.PDF

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