difference between potential and potential difference with its SI unit
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Answer:
ELECTRIC POTENTIAL DIFFERENCE:
In an electrical circuit, the potential between two points is defined as the amount of work done by an external agent in moving a unit charge from one point to another.The potential difference is measured by an instrument called voltmeter. The two terminals of a voltmeter are always connected parallel across the points whose potential is to be measured.
the SI unit is joule
ELECTRIC POTENTIAL:
An object rose against gravity, gains some gravitational potential energy proportional to the work done required to raise the object against the gravitational pull. Similarly, in an electric field, when an object is moved against the electric field it gains some amount of energy which is defined as the electric potential energy.
the Si unit is volt
What is Electric Potential?
Electric potential (V) is the property of points in space. Electric potential can be defined in several ways:
The value of the electric potential at a point in space numerically gives the amount of work that needs to be done to bring a unit positive charge from infinity to that point.
A charge q is said to have a potential energy of Vq if it is at a point in space which has a potential of V.
For example, if you place a charge q at a point, space nearby will have a non-zero value of potential. The electric potential at a point due to a charge at a distance r from it is given by:
V=kqr
What is Electric Potential Energy?
Electric potential energy (U) is the property of a system. Two charges in the vicinity of each other are said to have potential energy.
The electric potential energy associated with two charges separated by a distance r is given by:
U=kq1q2r