A mass has a charge of q = 3e, where e is the charge on an electron. (a) Determine the electric potential (in V) due to the charge at a distance  r = 0.400 cm  from the charge.   b) Determine the electric potential difference (in V) between a point that is 3r away and this point, that is  V(3r) − V(r).   (c) Determine the electric potential difference (in V) between a point that is r/3 away and this point, that is V(r/3) − V(r).

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A mass has a charge of q = 3e, where e is the charge on an electron.
(a)
Determine the electric potential (in V) due to the charge at a distance 
r = 0.400 cm
 from the charge.
 
b)
Determine the electric potential difference (in V) between a point that is 3r away and this point, that is 
V(3r) − V(r).
 
(c)
Determine the electric potential difference (in V) between a point that is r/3 away and this point, that is
V(r/3) − V(r).
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