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Physics
Physics
Problem
Four identical point charges
+
q
+q
+
q
are located at the vertices of a regular tetrahedron with edge length
a
a
a
. What is the total electric potential energy of the system? a)
12
k
q
2
a
\displaystyle \frac{12kq^{2}}{a}
a
12
k
q
2
b)
6
k
q
2
a
\displaystyle \frac{6kq^{2}}{a}
a
6
k
q
2
c)
3
k
q
2
a
\displaystyle \frac{3kq^{2}}{a}
a
3
k
q
2
d)
4
k
q
2
a
\displaystyle \frac{4kq^{2}}{a}
a
4
k
q
2
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