0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
Why ampear is a fundamental unit?
The ampere is not fundamental, it is derived from the coulomb and the second: ampere = coulomb / second
How is current fundamental physical quantity when current is equal to charge per unit time?
The unit is the Ampere, equivalent to 1 coulomb of charge per second.
What fundamental quantities constitute 1 ampere of electric current?
The ampere is an SI base unit and is not defined in terms of charge and time at the moment. There is a proposal that has been put forward (2005), though still not ratified (2014) that would indeed define an ampere in terms of charge and time. Since the second is a fundamental unit and an electron a fundamental particle it is proposed to define an ampere as the rate of flow of fundamental charges. It is equivalent to 1 coulomb of charge flowing for 1 second. At the moment , the amp(ere) in fact, is defined in terms of the force between parallel, current-carrying, conductors. However, there is uncertainty in this measurement of a few parts in 10,000,000. So, if you were to break down the ampere, you would find it currently is defined in terms of the metre (a base unit) and the newton (a derived unit) which, in turn, is defined in terms of the base units kilogram, metre, and second.
Why ampere considered as a fundamental unit though it is a derived one?
Because you have to start somewhere - you can't derive ALL units. You have to have SOME fundamental units.For example, 1 ampere = 1 coulomb / second. That also means that 1 coulomb = 1 ampere x 1 second, or that 1 second = 1 coulomb / 1 ampere. In other words, you can derive any of the three units from the other two. In practice, for base units, units were chosen that can be measured with great precision.Another AnswerThe ampere is not a 'fundamental' unit; it is a base unit. The ampere was chosen as a base unit, because it relates electrical units to mechanical units, being defined, as it is, in terms of the force (which itself is defined in terms of base units) between current-carrying conductors.You might be getting confused because, quite wrongly, the ampere is often defined as a 'coulomb per second'. While it is certainly equivalent to a coulomb per second, it is not definedin this way.
Is charge a fundamental unit or a derived unit?
In FPS system of units, feet is the fundamental unit of length, one of the fundamental physical quantities.
Why ampear is a fundamental unit?
The ampere is not fundamental, it is derived from the coulomb and the second: ampere = coulomb / second
Why we use force in defining ampere though ampere is a fundamental quantity?
Mass is a fundamental unit. Force is fundamental. Do you see a problem with this: Force = mass * accelation, or Mass = Force / acceleration Fundamental quantities are related to each other. There is no contradition to write an equation relating them to one another. An ampere can be defined as 1A = 1C/second.
Example of fundamental unit?
Meter Kilogram Second Ampere Kelvin Mole Candela
How is current fundamental physical quantity when current is equal to charge per unit time?
The unit is the Ampere, equivalent to 1 coulomb of charge per second.
What is dimension of charge?
Electrical charge is a fundamental dimension all by itself, and is not derived fromany other fundamental units. The unit of charge is the Coulomb, which is definedas 1 ampere-second.
What fundamental quantities constitute 1 ampere of electric current?
The ampere is an SI base unit and is not defined in terms of charge and time at the moment. There is a proposal that has been put forward (2005), though still not ratified (2014) that would indeed define an ampere in terms of charge and time. Since the second is a fundamental unit and an electron a fundamental particle it is proposed to define an ampere as the rate of flow of fundamental charges. It is equivalent to 1 coulomb of charge flowing for 1 second. At the moment , the amp(ere) in fact, is defined in terms of the force between parallel, current-carrying, conductors. However, there is uncertainty in this measurement of a few parts in 10,000,000. So, if you were to break down the ampere, you would find it currently is defined in terms of the metre (a base unit) and the newton (a derived unit) which, in turn, is defined in terms of the base units kilogram, metre, and second.
Is the ampere a unit of quantity or a unit of rate?
The ampereOnce upon a time, the coulomb was defined as the fundamental unit of charge, and the ampere was a derived unit proportional to charge (in coulombs) and inversely proportional to time (in seconds). More specifically, one ampere is equal to a charge transfer rate of one coulomb per second. So, it is a rate -- a charge-transfer rate. Nowadays, the ampere is considered the fundamental unit, and the coulomb is the derived unit. In other words, the coulomb is the amount of charge delivered in one second by a current of one ampere.AnswerThe coulomb has never ever been considered a Base Unit in either the SI or earlier metric systems. The ampere has always been considered a Base Unit. Prior to 1948, the ampere was defined in terms of its chemical effect; after 1948 it was defined in terms of its magnetic effect -i.e. in terms of the force between two, parallel, current-carrying conductors. So, the ampere has never been defined as an unit of rate. On the contrary, the coulomb is a Derived Unit, based on the ampere and the second.
What is the name of unit of electric current in fps system?
ampere is the unit in all the systems for electric current
Why ampere considered as a fundamental unit though it is a derived one?
Because you have to start somewhere - you can't derive ALL units. You have to have SOME fundamental units.For example, 1 ampere = 1 coulomb / second. That also means that 1 coulomb = 1 ampere x 1 second, or that 1 second = 1 coulomb / 1 ampere. In other words, you can derive any of the three units from the other two. In practice, for base units, units were chosen that can be measured with great precision.Another AnswerThe ampere is not a 'fundamental' unit; it is a base unit. The ampere was chosen as a base unit, because it relates electrical units to mechanical units, being defined, as it is, in terms of the force (which itself is defined in terms of base units) between current-carrying conductors.You might be getting confused because, quite wrongly, the ampere is often defined as a 'coulomb per second'. While it is certainly equivalent to a coulomb per second, it is not definedin this way.
An ampere is the SI unit of which of the following?
An ampere is the unit of (electrical) current.
What is an unit that tells how much electric current flow through a wire?
amperes or A.
What is the unit for measuring current?
Ampere or amp.
