Current is the amount of electrons passing through a wire. Can we say that voltage is the speed of those electrons?

# Voltage – Is Voltage the Speed of Electrons

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# Voltage – Is Voltage the Speed of Electrons

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Current is the amount of electrons passing through a wire. Can we say that voltage is the speed of those electrons?

## Best Answer

No, it's not the speed of the electrons moving within the conductor.

The voltage unit is

potential energypercharge:An example...

Imagine we have a

ballof massM = 10 kg.This ball exists in a

conservative gravitational field(the Earth's gravitational field). If we want to raise it by a height of 1 meter, we must - somehow - supply anXamount of energy, that gives the ball enough speed to move 1m above its surface.We will give the ball this amount of energy in terms of

kinetic energy(speed). So we throw the ball upwards with some speed, and as the ball moves upward, its speed decreases; and itspotential energyincreases until the it stops and all the kinetic energy is converted to potential energy.The following picture shows the amount of

potential energyfor a ball of massM = 10 kgat different heights above sea level:But what if we want to make a generic scale?

For any ball of an arbitrary mass, at any height, we can get the amount of energy for every

1 kgin it (Energy per mass):Now we can say that, at a height of

3 metersabove sea level, any object of massXwill have an amount of energy equals29.4 joulesfor every 1 kg of mass. This is due to the earth'sgravitational field.Voltage, orelectric potential, is the amount of potential energy (joules) that any "charged body" within anelectric fieldwill have, for every1 coulombof electric charge in it.