Re:Twisted graphene has become the big thing in physics
by soulofmischief on Friday May 03, 2019 @05:18AM
(#19816771)
> Charge is a property of matter which causes experiencing a force when placed in an electric field.
From Wikipedia [0]:
"A battery's capacity is the amount of electric charge it can deliver at the rated voltage."
Another way of saying this is that a battery can store potential electric charge which is discharged from the battery during use. The maximum potential electric charge a battery can store is its capacity.
Similarly, a rock raised above your head is not "storing gravity", but it still contains gravitational potential energy.
When we talk about batteries however, we tend to colloquially refer to this electrical potential as "charge" due to the way words like "charger" and "discharge" have entered the vernacular. Phrases like, "How much charge does your phone have left?" has become increasingly common.
This is distinct from the definition of electric charge that you lifted from Wikipedia's page on "electrical charge". It's just the way language has evolved.
> And charges arrange in some form under this field which wouldn't be so in absense of this field and how tight is that form depends on the strength of electric field. And this can be used to perform some work but this is not storing charge as the total charge before arrangement is same as total charge after arrangement there is no new charge added.
We are not measuring the total charge. We are measuring the electrical potential across a circuit. The total "charge" remains the same, but the electrical potential decreases when the battery discharges.
From Wikipedia [0]:
"A battery's capacity is the amount of electric charge it can deliver at the rated voltage."
Another way of saying this is that a battery can store potential electric charge which is discharged from the battery during use. The maximum potential electric charge a battery can store is its capacity.
Similarly, a rock raised above your head is not "storing gravity", but it still contains gravitational potential energy.
When we talk about batteries however, we tend to colloquially refer to this electrical potential as "charge" due to the way words like "charger" and "discharge" have entered the vernacular. Phrases like, "How much charge does your phone have left?" has become increasingly common.
This is distinct from the definition of electric charge that you lifted from Wikipedia's page on "electrical charge". It's just the way language has evolved.
> And charges arrange in some form under this field which wouldn't be so in absense of this field and how tight is that form depends on the strength of electric field. And this can be used to perform some work but this is not storing charge as the total charge before arrangement is same as total charge after arrangement there is no new charge added.
We are not measuring the total charge. We are measuring the electrical potential across a circuit. The total "charge" remains the same, but the electrical potential decreases when the battery discharges.
[0] https://en.wikipedia.org/wiki/Electric_battery#Capacity_and_...