What is the main difference between current and voltage?

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mwmovr40's profile pic

mwmovr40 | College Teacher | (Level 1) Associate Educator

Posted on

In an electrical current, electric charges are moved from a location of high potential energy to low potential energy.  Electric charge is measured in units call Coulombs.

The rate at which electic charge is moved is measured in Coulombs per second, or Amperes (amps).  The rate of of flow of electric charege is the current.  So current is the movement of electric charge through a circuit.

Current moves electric charge from a location of high potential energy to one of low potential energy.  The difference between the high potential energy and the low potential energy is the voltage difference.  The greater the difference, the greater the current.  So, the "voltage" is the energy source which causes the electric current to flow through the circuit.

kashmirinnocence's profile pic

kashmirinnocence | Student, Undergraduate | (Level 1) Honors

Posted on

votage is a way to describe potential difference and it is bcz of potential difference that there is current( flow of charge,actually from high potential to lower one)

SO VOLTAGE IS THE DRIVING FORCE FOR CURRENT

IF THERE IS POTENTIAL DIFFERENCE THERE MAY BE CURRENT{if potential difference is applied across a conductor}ie,there may be voltage without current

BUT CURRENT CANT EXIST WITHOUT POTENTIAL DIFFERENCE/VOLTAGE

unit of voltage is V;VOLTS

unit of current is amp/A;ampere

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