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CRT/Physics question!

S

Syringer

Lifer
Since everyone loves to do Physics on Phydays..

Electrons are accelerated by 14 kV in a CRT. The screen is 32 cm wide and is 34 cm from the 2.4 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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