Unit of Current

Introduction:

We have heard a lot about electric currents in our classrooms as well as at home. While the topic is highly relatable, in more scientific terms an electric current is basically a flow of current or charge in electric circuits.

Sometimes both ions and electrons carry the charge simultaneously. Electric current or charge is measured by an ammeter and there are different measurement methods as well as units of current. Here we will look at some of them in detail.

What is the SI Unit of Electric Current?

The SI unit of current is ampere which measures the flow of electric charge across a surface at the rate of one coulomb per second. Since the charge is measured in coulombs and time in seconds, so the unit is coulomb/Sec (C/s) or amp. Meanwhile, the formula for electric current is given as follows:

I = V/R

Where,

• I = Electric Current
• V = Voltage
• R = Resistance of the material

Ampere is one of the SI base units for electric current. It is used in electronic and electrical science as well as other areas of science. The definition of ampere is based on the electromagnetic effect it induces.

You may also want to check out these topics given below!

• Unit Of Conductivity
• Unit of Electric Flux
• Unit of Electric Field
• Unit of Electric Charge
• Unit of Electricity

Some Other Current Units

Apart from ampere, there are several standard units of measurement used for the expression of electrical properties like the voltage, resistance, power, capacitance, inductance, electric field, electric charge, frequency, the magnetic flux which are all related to electric current.

Electrical Parameter	Measuring Unit	Symbol
Voltage	Volt	V or E
Resistance	Ohm	R or Ω
Capacitance	Farad	C
Charge	Coulomb	Q
Inductance	Henry	L or H
Power	Watts	W
Impedance	Ohm	Z
Frequency	Hertz	Hz
Conductance	Siemen	G or ℧