Two charges 4×10^-9and -3×10^-9 Colomb are located at 0.1meters apart . At what charges is the electric potential zero
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Answer:
0.057 meter from charge 4×10^-9 along the direction of line joining both the charges.
Explanation:
Equate the sum of the electric potential to 0
and let the distance be X meter from charge 4×10^-9 in left. now equate the sum
K4×10^-9/x+K(-3)×10^-9/0.1-x=0
4K×10^-9/x=3K×10^-9/0.1-x
4/x=3/0.1-x
cross multiply
0.4-4x=3x
0.4=7x
0.4/7=x
0.057meter =x
therefore at a distance of 0.057 meter from charge 4×10^-9 coulomb net electric potential is zero.
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