**The ampere, symbol A**, is the SI unit of electric current. It is defined by taking the fixed numerical value of the elementary charge e to be 1.602 176 634 x 10^{–}^{19} when expressed in the unit C, which is equal to A s, where the second is defined in terms of Δν_{Cs}.

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## Which is the unit of current answer?

SI unit of current is ampere.

## What is current and its SI unit?

Current is the rate of flow of charge across a cross-section normal to the direction of flow of current. The S.I. unit of current is coulomb per second which is called ampere and denoted by A. Current is a scalar quantity.

## What is current formula?

The current formula is given as I = V/R. The SI unit of current is Ampere (Amp).

## Is SI an unit?

The SI comprises a coherent system of units of measurement starting with seven base units, which are the second (symbol s, the unit of time), metre (m, length), kilogram (kg, mass), ampere (A, electric current), kelvin (K, thermodynamic temperature), mole (mol, amount of substance), and candela (cd, luminous intensity)

## What is Ohm’s law state?

Ohm’s law states that the current through a conductor is proportional to the voltage across the conductor. V=IR where V is the voltage across the conductor and I is the current flowing through it.

## What is the symbol for current?

The conventional symbol for current is I, which originates from the French phrase intensité du courant, (current intensity). Current intensity is often referred to simply as current. The I symbol was used by André-Marie Ampère, after whom the unit of electric current is named, in formulating Ampère’s force law (1820).

## What are types of current?

There are two kinds of current electricity: direct current (DC) and alternating current (AC). With direct current, electrons move in one direction. Batteries produce direct current.

## What is watt formula?

The formula for calculating wattage is: W (joules per second) = V (joules per coulomb) x A (coulombs per second) where W is watts, V is volts, and A is amperes of current. In practical terms, wattage is the power produced or used per second. For example, a 60-watt light bulb uses 60 joules per second.

## What is SI unit of mass?

The SI unit of mass is the kilogram (kg). Thus, the SI unit of the quantity weight defined in this way (force) is the newton (N).

## What is full form of SI unit?

The second, symbol s, is the SI unit of time. It is defined by taking the fixed numerical value of the cesium frequency Δν_{Cs}, the unperturbed ground-state hyperfine transition frequency of the cesium 133 atom, to be 9 192 631 770 when expressed in the unit Hz, which is equal to s^{–}^{1}.