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Physics
Physics
Problem
Which of the following correctly states the proportional relationship between the electrostatic potential energy
E
E
E
of two ions with charges
q
1
q_1
q
1
and
q
2
q_2
q
2
separated by a distance
r
r
r
? a)
E
∝
q
1
+
q
2
E \propto q_1+q_2
E
∝
q
1
+
q
2
b)
E
∝
q
1
q
2
r
E \propto \dfrac{q_1 q_2}{r}
E
∝
r
q
1
q
2
c)
E
∝
q
1
q
2
r
2
E \propto \dfrac{q_1 q_2}{r^{2}}
E
∝
r
2
q
1
q
2
d)
E
∝
(
q
1
q
2
)
r
E \propto (q_1 q_2)\,r
E
∝
(
q
1
q
2
)
r
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