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Physics
Physics
Problem
An electron is moving round the nucleus of a hydrogen atom in a circular orbit of radius
r
r
r
. The coulombic force
F
⃗
\vec{F}
F
between the two is :
(
K
=
1
4
π
ϵ
0
)
\left( K = \frac{1}{4\pi\epsilon_0} \right)
(
K
=
4
π
ϵ
0
1
)
a.
K
e
2
r
2
\frac{Ke^2}{r^2}
r
2
K
e
2
b.
−
e
2
K
r
2
-\frac{e^2}{Kr^2}
−
K
r
2
e
2
c.
e
2
K
r
2
\frac{e^2}{Kr^2}
K
r
2
e
2
d.
−
K
e
2
r
2
-\frac{Ke^2}{r^2}
−
r
2
K
e
2
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