6 of 6 Which pair of values will cause the greatest deflection of an electron beam in a cathode ray tube? ACCELERATING VOLTAGE DEFLECTION (PLATE) VOLTAGE a. 400 V 20 V b. 400 V 40 V c. 800 V 20 V d. 800 V 40 V A B C D
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In a Cathode Ray Tube (CRT), the deflection of an electron beam is inversely proportional to the accelerating voltage and directly proportional to the deflection (plate) voltage. The deflection ($D$) can be expressed as: $D \propto Show more…
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Which pair of values will cause the greatest deflection of an electron beam in a cathode ray tube? ACCELERATING VOLTAGE | DEFLECTION (PLATE) VOLTAGE A. 400 V | 20 V B. 400 V | 40 V C. 800 V | 20 V D. 800 V | 40 V
Mahendra K.
10. The deflecting voltage applied to the plates in a CRT is 50.0 V. The plates are 1.2 cm apart. (a) What is the electric field strength between the plates? (b) What force will the field exert on an electron passing between the plates? (c) At what rate and in what direction will the electron accelerate? (Electron mass = 9.1 ! 10^-31 kg) 11. An accelerating voltage of 750 V produces a screen deflection of 4.2 cm on a CRT. If the deflecting voltage is kept constant but the accelerating voltage is increased to 1000 V, what will the deflection become?
Sri K.
(III) Electrons are accelerated by 6.0 $\mathrm{kV}$ in a CRT. The screen is 28 $\mathrm{cm}$ wide and is 34 $\mathrm{cm}$ from the 2.6 -cm-long deflection plates. Over what range must the horizontally deflecting electric field vary to sweep the beam fully across the screen?
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