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Q2
d2
A
d1
Q1
As shown in the Figure, point A is at distance d1=3 m from point charge Q1= -1 µC and distance d2= 7 m from point charge Q2= 3 µC, with both charges fixed in place. (k=9x10°
N.m2/C2)
a)What is the magnitude of the Electric Field at point A?
N/C
b)With V=0 at infinity, what is potential, VA, at point A?
c)lf a particle of charge Q3= 5 µC is brought from infinity to P, how much work is done?
x10-3)

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