Three equal point charges, each with charge 1.35 μC , are placed at the vertices of an equilateral triangle whose sides are of length 0.550 m . What is the electric potential energy UUU of the system? (Take as zero the potential energy of the three charges when they are infinitely far apart.) U= ? J

Physics for Scientists and Engineers: Foundations and Connections
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Author:Katz, Debora M.
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Chapter26: Electric Potential
Section: Chapter Questions
Problem 35PQ: Figure P26.35 shows four particles with identical charges of +5.75 C arrayed at the vertices of a...
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Three equal point charges, each with charge 1.35 μC , are placed at the vertices of an equilateral triangle whose sides are of length 0.550 m . What is the electric potential energy UUU of the system? (Take as zero the potential energy of the three charges when they are infinitely far apart.)

U= ? J

Expert Solution
Step 1

Given,

charge q1=q2=q3=1.35 μC =1.35×10-6

Since the triangle is equilateral r1=r2=r3=0.550 m

We know that the electric potential energy between two point charges is 

E=kq1q2r

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