Asked by JOTHEY
A -3.0 nC charge is on the x-axis at x = -10 cm and a +4.0 nC charge is on the x-axis at x = 20 cm.
At what point or points on the y-axis is the electric potential zero?
At what point or points on the y-axis is the electric potential zero?
Answers
Answered by
bobpursley
electric potential is the scalar addition of each component.
V= kq/r+ kq/r= -k3.0nC/(r+0.10)+k4nC/(r-0.20)
at V=0
3(r-.20)=4(r+.10)
r= -.6-.4= -1meter
check V(-1)=k(-3)/(-.9)+k4/(-1.2)=0
V= kq/r+ kq/r= -k3.0nC/(r+0.10)+k4nC/(r-0.20)
at V=0
3(r-.20)=4(r+.10)
r= -.6-.4= -1meter
check V(-1)=k(-3)/(-.9)+k4/(-1.2)=0
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