a) what type of charge is ther in each plate? b) what is the direction of the el

Question

a) what type of charge is ther in each plate? b) what is the direction of the electric field between the plates? c) If the plates are squared and its sides measure 25.4 como of longitud, determine the charge in each one of them. An elecdston parks fvem a plate thet inteyrakes an attay ot parallel plales choige and wilh a small separalien (verlical) Th speed o te eaden tis at Le3x04 mk louords the right. Its speed whin it hce reached located at 21 pe of chavge is Hlere in cach plate electrtie ween CTth putes ave squared ond its sds meesure 7s.elem of lengike ary t he m

Explanation / Answer

a) charge on left plate is negative charge and charge on right plate is positive charge.

b) direction of eletric field : towards left

c) let a is the acceleration of the electron.

a = (vf^2 - vi^2)/(2*d)

= ((4.14*10^4)^2 - (1.63*10^4)^2)/(2*0.021)

= 3.45*10^10 m/s^2

let E is the elctric field between the plates.

so, F = q*E

m*a = q*E

==> E = m*a/q

= 9.1*10^-31*3.45*10^10/(1.6*10^-19)

= 0.196 N/C

let Q is the magnitude of charge on each plate.

Area of each plate, A = L^2

= 0.254^2

we know, E = Q/(A*epsilon)

Q = E*A*epsilon

= 0.196*0.254^2*8.854*10^-12

= 1.12*10^-13 C

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