# Is it true that the voltage at a point means the quantity of charge at

## Main Question or Discussion Point

is it true that the voltage at a point means the quantity of charge at that point?if not then what is voltage?
thanks

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tiny-tim
Homework Helper
hi amaresh92! is it true that the voltage at a point means the quantity of charge at that point?if not then what is voltage?
thanks
no, voltage is a difference between two points …

it's the difference in electric potential between two points

(and since electric potential = potential energy per charge, that means it's the difference in potential energy between two points, for a unit charge)

from the work energy theorem that means that the work done moving a charge q through a voltage difference V is the change in potential energy: Vq hi amaresh92! no, voltage is a difference between two points …

it's the difference in electric potential between two points

(and since electric potential = potential energy per charge, that means it's the difference in potential energy between two points, for a unit charge)

from the work energy theorem that means that the work done moving a charge q through a voltage difference V is the change in potential energy: Vq i am not able to understand the term electric potential?Is electric potential and voltage means same?
thanks.

tiny-tim
yes, voltage = potential difference = difference in electric potential = difference in potential energy per electric charge 