What is the formula for electric potential due to a point charge?
1 Answer
The formula for the electric potential (
V) due to a point charge (
q) at a distance (
r) from the point charge is given by Coulomb's law:
=
⋅
V=
r
k⋅q
Where:
V is the electric potential at the point in space,
k is Coulomb's constant (
8.9875
×
1
0
9
N
⋅
m
2
/
C
2
8.9875×10
9
N⋅m
2
/C
2
in SI units),
q is the magnitude of the point charge in Coulombs (
C),
r is the distance from the point charge in meters (
m).
It's important to note that the electric potential at a point in space is a scalar quantity, and it represents the work done in bringing a unit positive test charge from infinity to that point, divided by the charge of the test charge.
V) due to a point charge (
q) at a distance (
r) from the point charge is given by Coulomb's law:
=
⋅
V=
r
k⋅q
Where:
V is the electric potential at the point in space,
k is Coulomb's constant (
8.9875
×
1
0
9
N
⋅
m
2
/
C
2
8.9875×10
9
N⋅m
2
/C
2
in SI units),
q is the magnitude of the point charge in Coulombs (
C),
r is the distance from the point charge in meters (
m).
It's important to note that the electric potential at a point in space is a scalar quantity, and it represents the work done in bringing a unit positive test charge from infinity to that point, divided by the charge of the test charge.