## Potential Difference – PCB circuit board

We are No 1 PCB circuit board manufacturer since 2002 . The Potential Difference or sometimes called the Voltage is defined as the difference of the two voltages between two points. This difference is needed to flow the current from one point to another in a PCB circuit board or any other circuit board design. We know that positive and negative charges get attracted; this principle is used in an electric circuit for the generating or flowing of the electric charges. The ability to do work by taking the electric charges from one terminal to another terminal is called the Electric Potential.

The unit of the Potential Difference is Volt, named after the scientist Alessandro Volta. One volt is defined as the difference in electric potential between two points of a conducting wire when an electric current of one ampere dissipates one watt of power between those points.

There are two types of Voltages: DC or Direct Current Voltage and AC or Alternating Current Voltage. The DC voltage is defined as the constant or same voltage supply throughout the electric circuit. The Batteries and cells provide DC voltage. Whereas the AC voltage is defined as that voltage which changes its direction by time or periodically, which is not constant. The AC generators and voltage in our homes are examples of AC voltage.

The polarity or sign convention of the voltage is always the same for any circuit, for example, if point A has a certain charge and point B has different charge than point A and we have to drive the charges from point A to point B, then according to the convention the point A will be positive and point B will be negative.