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Byju's Answer
Standard X
Physics
Electric Current
define, poten...
Question
define, potential at a point due to group of electric charges?
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Solution
Answer
The
electric
potential
(
voltage
)
at
any
point
in
space
produced
by
any
number
of
point
charges
can
be
calculated
from
the
point
charge
expression
by
simple
addition
since
voltage
is
a
scalar
quantity
.
The
potential
from
a
continuous
charge
distribution
can
be
obtained
by
summing
the
contributions
from
each
point
in
the
source
charge
.
The
calculation
of
potential
is
inherently
simpler
than
the
vector
sum
required
to
calculate
the
electric
field
.
The
electric
field
outside
a
spherically
symmetric
charge
distribution
is
identical
to
that
of
a
point
charge
as
can
be
shown
by
Gauss
'
Law
.
So
the
potential
outside
a
spherical
charge
distribution
is
identical
to
that
of
a
point
charge
.
let
us
consider
n
number
of
charges
q
1
,
q
2
,
q
3
.
.
.
.
.
.
.
.
.
q
n
seprated
by
the
r
1
,
r
2
.
.
.
.
.
.
r
n
from
the
point
P
potential
due
to
n
number
of
charges
at
a
poin
P
is
given
as
V
=
k
q
1
r
1
+
k
q
2
r
2
+
k
q
3
r
3
+
.
.
.
.
.
.
.
.
.
.
.
k
q
n
r
n
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