Question

what is volt and why it is very important?

Answer 1

The SI unit of electromotive force, the difference of potential that would carry one ampere of current against one ohm resistance.

Voltage is a very important concept in operating a power system, and in talking about how the power system works.

Answer 2

voltage is the work done to move a unit positive charge from one point to another point...Its SI unit is Volt...

A common use of the term "voltage" is in describing the voltage dropped across an electrical device (such as a resistor)...it is one of the most important substance of electric circuit....

hope it helps