Physics

Problem

Which of the following relationships correctly describes how the magnitude

E

of the electric field produced by an isolated point charge

q

depends on the distance

r

from the charge? a)

E \propto \dfrac{q}{r}

E \propto \dfrac{q^{2}}{r^{2}}

E \propto \dfrac{q}{r^{2}}

E \propto \dfrac{q}{r^{3}}