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Electric Curreent

Flow of electrons is called electric current.

voltage

It is also called electromotive force, is a quantitative expression of the potential difference in charge between two points in an electrical field.

potential difference

The potential difference between two points is defined as:Potential difference between two points in a circuit is the work done in moving unit charge (i.e. one coulomb) from one point to the other. The units for potential difference are Joules per coulomb, or volts. (1 volt = 1 Joule/coulomb).

A system backup is the process of backing up the operating system, files and system-specific useful/essential data. Backup is a process in which the state, files and data of a computer system are duplicated to be used as a backup or data substitute when the primary system data is corrupted, deleted or lost.

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