# Differences charge quantity and electric charge

First of all,my english is not well,so sorry for reading. As a senior middle school from China mainland,I am teaching physics about electri field.I with my workmates,get a problem now.We can not get a agreement.There are three viewpoints.

The first is that,electric charge is physical attribute and a physical quantity.It means electric charge is a physical quantity.The unit of electrical charge is the coulomb (symbolized C).

The second is that,electric charge is physical attribute.Charge quantity is a physical quantity.The unit of charge quantity is the coulomb (symbolized C). Electric charge has no unit.

The third is that,electric charge is physical attribute and a physical quantity.Charge quantity is a physical quantity too.The unit of electrical charge is the coulomb (symbolized C). The unit of charge quantity is the coulomb (symbolized C) too.

• When you say "charge quantity", do you mean something like "the number of objects with electric charge"? – probably_someone Sep 4 '19 at 14:24

## 1 Answer

Charge is a fundamental and inherent physical property of matter and we know that for sure because we can measure it. It is defined:

• by a magnitude, which helps us understand how strongly matter experiences or produces electric, magnetic or electromagnetic fields
• by a unit of measurement, which is a definite magnitude decided by a convention ($$C$$, $$e$$, $$\frac{[Current Intensity]}{[Time]}$$, ...)

I'm not exactly sure what you mean by physical attribute or physical quantity but in that case, I believe charge by definition is closer to your third viewpoint

• I find exact meaning of electri charge.But find no entry of charge quantity.I am confused.I thought charge quantity is a oral language.I am not sure – kaoyan Sep 5 '19 at 3:34