Homework Answers
Region 1: K.E of electron =work done on elctron in V1
Assume V1 =Potential difference applied
v1 =velocity of electron after end of region 1
=>1/2*m*v1^2 =e*V1 =>v^2 =2*e*V1/m =2*1.6*10^-19*1.02*10^3/(9.1094*10^-31) =3.583*10^14
=>v1 =1.89*10^7 m/s
Region 2: force balance on electron: e*E-e*v2*B =0 (since electron moves in straight line without any deviation)
=>B=E/v2 =(V2/d)/v1 =171/(0.0265*1.89*10^7) =3.414*10^-4T
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