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coordinate system if you have not already done so. Does the electric field vary inthe region between the deflecting plates? What does that tell you about theacceleration of the electron in that region?5.Use your drawing from step 1 and kinematics to determine the position anddirection of the electron as it enters the region between the deflection plates andwhen it leaves that region. Write down an equation giving the electron’s change inposition as it emerges from the deflecting plates (how much it was deflected whiletraveling between the plates). Write another equation giving the electron’s direction.6.Use your drawing from step 1, the position and direction of the electron as it leavesthe deflection plates, and geometry to write down an equation giving the position ofthe electron when it hits the screen. Use the deflection distance from each region towrite an expression for the total deflection during the electron’s motion through allregions of the CRT.7.Examine your equations giving the electron’s position at the screen. You know thetotal deflection in terms of the accelerating voltage, length of the deflecting plateregion, distance from the plates to the screen, separation distance of the plates, andpotential difference across the plates. Are there any other unknowns in yourequation? Do you have enough equations to solve for the unknowns? If so, solveyour equations algebraically for the deflection of an electron. If not, write downadditional equations that relate some of the unknown quantities in your equations toquantities that you know.8.Complete your solution by using the actual numbers that describe your situation.Refer to the distances shown on the diagram of the CRT in the appendix. Does yoursolution make sense? If not, check your work for logic problems or algebra mistakes.111
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