The electric field between plates (A) is zero. As the beam exits the space between plates (B), it has been deflected 2.0 mm downward (Δy = −2.0 mm). What is the electric field between plates (B)?

After the electrons in Example 16.9 pass through the anode, they are moving in the z-direction at a speed of 8.4 × 10⁶ m/s. They then pass between a pair of vertical parallel plates 

(A) (see Fig. 16.39) and then between a pair of horizontal parallel plates 

(B). All four of these plates are squares 2.50 cm on a side. The plates of each pair are separated by 1.50 cm.

Transcribed Image Text:

(A) Plates for horizontal deflection Electron gun (B) Plates for vertical deflection Heated filament- (sou rce of electrons) Cathode Anode (+) + Uniform E field seen from side Electron beam Cathode Conductive coating- Fluorescent screen Electron beam Anode Side view