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Physics
Physics
Problem
Three identical point charges
+
q
+q
+
q
are placed at the vertices of an equilateral triangle of side
a
a
a
. What is the magnitude of the net force on the charge at one vertex due to the other two? a)
k
q
2
a
2
\dfrac{k q^{2}}{a^{2}}
a
2
k
q
2
b)
k
q
2
3
a
2
\dfrac{k q^{2}\sqrt{3}}{a^{2}}
a
2
k
q
2
3
c)
2
k
q
2
a
2
\dfrac{2k q^{2}}{a^{2}}
a
2
2
k
q
2
d)
k
q
2
2
a
2
\dfrac{k q^{2}\sqrt{2}}{a^{2}}
a
2
k
q
2
2
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