The source of all electricity is in charge. As the charge is the basis of all electrical phenomena, we need to know the amount of charge on a body. It is measured in coulombs. The coulomb is the SI unit of charge, and its symbol is C.Electricity passing through a wire
Flow of Charge
In general, the potential of a positively charged body is taken as higher than that of a negatively charged body.
If the two spheres are connected by a metal wire, electrons from the negatively charged sphere (at a lower potential) will flow to the positively charged sphere (at a higher potential). Eventually, the flow of electrons causes the charges on the spheres to become balanced. When that happens, the spheres no longer carry a net charge, and therefore, have equal potential. So, the flow of electrons stops. So we can say that a potential difference causes charges to flow.
![]() |
Test: Electricity - 1
|
Start Test |
Dry cell and symbol of a cell
A combination of cells is called a battery.
Battery
![]() |
Download the notes
Electric Current, Electric Potential & Potential Difference
|
Download as PDF |
80 videos|438 docs|74 tests
|
1. What is electric current? | ![]() |
2. What is electric potential? | ![]() |
3. What is potential difference? | ![]() |
4. What is the difference between electric potential and potential difference? | ![]() |
5. How is electric potential related to electric field? | ![]() |