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The amount of work a charged particle can do is the potential difference. The unit of potential difference is the differentiation in electric potential energy between the two distinct points.
It can be used to answer how much work must be done to carry one Volt of charge between two points in a circuit. We can think about it as the amount of energy per unit of time that passes through a wire as the charge moves from one point to another. The CGS unit of potential difference is StatVolt.
What is the Potential Difference?
The potential difference is the electrical potential difference in volts when a charge of 1-coulomb moves from one point to another between two points (called electrodes) and the electrons flow through an external circuit.
The unit of potential difference is called “volt” and it is equivalent to the voltage that develops without any current flow between two points in an electric circuit.
CGS Unit Of Potential Difference
The metric system is one of the most fundamental aspects of physics and it’s based on a set of units known as the CGS units. These units are necessary because they provide a standard way to measure physical quantities, allowing scientists and engineers to communicate effectively and accurately. The CGS units are also the foundation for the SI units, more commonly used in everyday life.
Statvolt is the CGS unit for the potential difference between the two points. It is named in honour of Alessandro Volta, the Italian physicist who invented the electric battery and the voltaic pile.
What is Statvolt?
Symbolised as V, statvolt is the cgs (centimetre/gram/second) unit of potential difference or EMF. EMF stands for electromotive force.
A 1 V of the potential difference drives a current of one (1 A) statampere through (1 W) ohm resistance.
When 1stat V of electromotive force (EMF) is present between two points, the energy’s one erg shall move the charge carrier’s one statcoulomb (1 statC) between the two points.
Mathematically, in SI (the international system),
E = IR
Here,
E= EMF in statvolts
I= current in statampere and
R=resistance in statohm
The practical applications prefer using the SI unit of the potential difference. However, The statvolt comes among the reasonably large units of EMF and is equal to 299.79 volts (V) approximately.
What is the SI unit of potential difference between two points?
The SI unit of potential difference between two points is the Volt. Named for Alessandro Volta, a volt is a metric unit of electrical potential equal to the difference in electric potential between two points in a conductor that carries a one-ampere constant current when the power of 1 watt is dissipated between the points.
It can also be defined as the work that must be done to move a charge of one coulomb from one point to another against an electric field of one Volt
SI Unit Of Potential Difference In Terms Of Charge & Work
The Volt is also equivalent to one joule of work per coulomb of charge. This definition highlights the relationship between potential difference and work, two important concepts in physics.
SI unit of potential difference being Volt when carrying a charge of 1 coulomb from infinity to a particular point or location in the electric field, work of 1 joule is done. At that point, the potential is 1V (Volt).
It is represented mathematically as,
V = W/q
Where,
W= Work Done
q= Unit Charge
The potential difference (PD) between two points in an electric field is the work done per unit charge to move a test particle from one point to another.
Conclusion
A statvolt is a cgs unit of potential difference. It is equal to the potential difference between two points in a distributed electric field with a total charge of one statcoulomb. It can measure the voltage drop along a conductor or the potential difference between two points in an electric field. The SI unit for the potential difference is the Volt. It is defined as the potential difference between two points in an electric field that will cause a one-coulomb charge to move between those points.
