ELECTRIC POTENTIAL


1. Definition
   Electric potential is the magnitude of the electric potential energy for each charge.

2. Formula
   
Where:
  • V is the electric potential (Volt)
  • k is a constant with a value of 8.99 x 109 N m2/C2 
  • q is the charge of each object (C)
  • r is the distance between the charges (m)
3. Important Figure
   
   Alessandro Volta was a physicist, chemist, and a pioneer of electrical science. He is most famous for his invention of the electric battery. He discovered that electric potential in a capacitor is directly proportional to electric charge and in recognition of Volta's contribution to science, the unit of electric potential is called the volt.

4. Uses in Everyday Life
   A battery powered electric circuit has locations of high and low potential. A charge moving through the circuit will experience charges in electric potential as it moves locations. In a battery there is an electric field established between the two terminals, directed from the positive terminal towards the negative terminal. Work is required for a positive test charge to move through the cell from the negative terminal to the positive terminal. This work causes an increase in the potential energy of every coulomb of charge that moves along this path.









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