Que 3). Two point charges placed at a distance & in air exert a force
F on each other. At what distance will these charges experience
the same force in a medium of dielectric constant k?
Answers
force F on each other. The distance r at which these charges will exert the same force in medium if dielectric constant k is given by.
Missing: diel | Must include: diel
Two point charge placed at a certain distance = r force = F dielectric constant = k Let, two point charges q1 and q2 are separated r distance from ...
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Two point charge placed at a certain distance =r
force =F
dielectric constant =k
Let, two point charges q
1
and q
2
are separated r distance from each other.
Then, force experienced between then,
F=
4πϵ
0
r
2
q
1
q
2
Put, F=
4πϵ
0
r
2
q
1
q
2
∴
4πϵ
0
r
2
4q
1
q
2
=
k(4πϵ
0
r
2
)
q
1
q
2
⇒
r
2
1
=
4r
2
h
1
⇒
r
2
1
=
kr
2
1
taking square root both sides
r
1
−
k
r
1
1
or, r
1
=
k
r