Four identical point charges are located at the vertices of a regular tetrahedron…

PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

Four identical point charges

+q

are located at the vertices of a regular tetrahedron with edge length

a

. What is the total electric potential energy of the system? (a)

\displaystyle \frac{12kq^{2}}{a}

(b)

\displaystyle \frac{6kq^{2}}{a}

(c)

\displaystyle \frac{3kq^{2}}{a}

(d)

\displaystyle \frac{4kq^{2}}{a}