Formula Electric Current Unit

If a charge q flows through the cross section of a conductor in time t the current i then i q t.

Formula electric current unit. The si unit of electric current is the ampere or amp which is the flow of electric charge across a surface at the rate of one coulomb per second. 15 electric current is measured using a device called an ammeter. Resistance if the electric power and the total resistance are known then the current can be determined by using the following formula. As we know the electric current is the rate of charge flow i e.

Formula unit of electric current. The s i unit of charge is coulomb and measurement of electric current happens in units of coulomb per. Electric current is known as the rate of flow of negative charges of the conductor. Electric current i charge q time t since the charge is measured in coulombs time in seconds the unit of electric current becomes coulombs sec.

The conventional direction of electric current is taken as opposed to the direction of flow of electrons. So the electric current can be calculated by formulae. Electric current formula unit. The electric current is given by.

I p r corresponding units. The ampere symbol a is the si unit of electric current. Let us begin learning. Ampere a volt v ohm ω this formula is derived from ohm s law.

I v r corresponding units. Electric current formula and unit. A common unit of electric current is the ampere which is defined as a flow of one coulomb of charge per second or 6 2 10 18 electrons per second. A 60 watt lightbulb pulls.

Commercial power lines make available about 100 amps to a typical home. The centimetre gram second units of current is the electrostatic unit of charge esu per second. Electric current is measured in terms of the rate of charge flow. Electric currents cause joule heating which creates light in incandescent light bulbs.

It means the continuous flow of electrons in an electric circuit is called an electric current. One ampere equals 3 10 9 esu per second.