Question

what is current?what it is S.I unit of current.

Answer 1

flow of electrical charges is called current
s.i. unit is Ampere but physical unit is coulomb/s

Answer 2

$\Large{\underline{\underline{\bf{Answer\: :-}}}}$

✦ What is Current ?

↠ Current is the rate at which electrons flow past a point in a complete electrical circuit. At its most basic, current = flow.

↠ It expresses the quantity of electrons (sometimes called "electrical charge") flowing past a point in a circuit over a given time.

✦ How to calculate Current ?

↠ Current is usually denoted by the symbol I. Ohm's law relates the current flowing through a conductor to the voltage V and resistance R; that is, V = IR. An alternative statement of Ohm's law is I = V/R.

✦ What is the unit of Charge and Electric Current ?

↠Unit of electric charge is coulomb or C, unit of electric current is ampere or A.

Note :-

Ohms Law and Power

$\sf\underline{\purple{\:\:\: \: \: To\: Find \: the \: Voltage ( V ) :- \:\:\:}}$[ V = I x R ] V (volts) = I (amps) x R (Ω)

$\sf\underline{\pink{\:\:\: \: \: To\: Find \: the \: Current ( I ) :- \:\:\:}}$ [ I = V ÷ R ] I (amps) = V (volts) ÷ R (Ω)

$\sf\underline{\purple{\:\:\: \: \: To\: Find \: the \: Resistance (R ) :- \:\:\:}}$ [ R = V ÷ I ] R (Ω) = V (volts) ÷ I (amps)

$\sf\underline{\pink{\:\:\: \: \: To\: Find \: the \: Power ( P ) :- \:\:\:}}$ [ P = V x I ] P (watts) = V (volts) x I (amps)