Parallel plates are separated by 9mm of air and have an electric field between t
ID: 1524075 • Letter: P
Question
Parallel plates are separated by 9mm of air and have an electric field between them of 2 times 10^5 v/m. What is the potential difference across the plates? [1800 V] If you move a proton from the negative to the positive plate, what is the work done? [2.88 times 10^-16 J or 1800eV] If you move an electron from the negative to the positive plate, what is the work done? At which plate does the proton have the higher potential energy? At which plate does the electron have the higher potential energy?Explanation / Answer
here,
7)
spacing between the plates , d = 0.009 m
electric feild , E = 2 * 10^5 V/m
a)
the potential difference across the plates , V = E * d
V = 1800 V/m
b)
the work done , W = q * V
W = 1800 eV or 1800 * 1.6 * 10^-19 = 2.88 * 10^-16 J
c)
if we move an electron from negative to positive plate , W' = - W
W' = - 1800 eV or - 2.88 * 10^-16 J
d)
the proton has higher potential energy at the positive plate
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