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Electrons in a cathode ray tube start from rest and are accelerated through a potential difference of...

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Physics

Electrons in a cathoderay tube start from rest and are accelerated through a potentialdifference of 12.2 kV. They are moving in the +x-directionwhen they enter the space between the plates of a parallel platecapacitor. There is a potential difference of 338 V between theplates. The plates have length 9.37 cm and are separated by 1.10cm. The electron beam is deflected in the negativey-direction by the electric field between the plates.

where P = 9.37 and Q = 338.

a) What is the valueof Δy, the vertical deflection?

b) Through whatpotential difference do the electrons move while between theplates?

c) What is the kineticenergy of the electrons as they leave the plates?

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