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3 equal 1.2*10^(-6) point charges placed at the corners of an equallatiral triangle with sides 0.5 m long.What is the elecntial tric potential energy of the system ?

3 equal 1.2*10^(-6) point charges placed at the corners of an equallatiral triangle with sides 0.5 m long.What is the elecntial tric potential energy of the system ?

Grade:12

1 Answers

vikas askiitian expert
509 Points
13 years ago

let the vertices of triangle are a,b,c ..

side of the triangle is d...

electric potential energy of system = Kqaqb/d +kqaqc/d +kqbqc/d

 qa = qb =qc =q

so PE = 3kq2 /d

        =3*9*109 *(1.2*10-6)2 /0.5

        =7.76*10-2 joule

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