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wasi-uz-zaman
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hi, why electric current is a SI base unit - why not couloumb?
In the past, realizability. A system of units needs to have base units that are realizable and portable. How do you measure charge? A flowing current induces a force on the wires through which the current is flowing. That force is measurable (but there are better realizations).wasi-uz-zaman said:hi, why electric current is a SI base unit - why not couloumb?
Electric current is considered a SI base unit because it is one of the fundamental physical quantities that can be measured and expressed in terms of other units. It is also an essential quantity for understanding and describing many natural phenomena.
Electric current is the flow of electric charge through a conductor. It is measured in units of amperes (A) and is defined as the rate of flow of one coulomb of charge per second.
Amperage is used to measure electric current because it is a standard unit of measurement in the SI system and is based on the fundamental unit of charge, the coulomb. It is also a practical unit for measuring the flow of electric current in everyday applications.
Using electric current as a base unit allows for easier conversion between units of measurement, as it is a fundamental quantity that can be expressed in terms of other units. It also provides a consistent and standardized system for measuring and describing electrical phenomena.
Yes, electric current can be measured in other units such as milliamperes (mA) or kiloamperes (kA). However, the SI unit of amperes is the most commonly used and recognized unit for measuring electric current.