8 identical spherical drops having potential 5 volt each coalesce to form a bigger spherical drop calculate potential of bigger drop.
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Explanation:
V=
r
kq
=20V
3
4
πR
3
=8×
3
4
πr
3
⇒R=2r
Q
′
=8q
V
′
=
R
kQ
′
=
2r
k×8q
=
r
4kq
=4×20
V
′
=80V
hope it helps
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