What is meant by electric current?
Name and define its SI unit. In a conductor electrons are flowing from B to A. What is the direction of conventional current? Give justification for your answer.

Explanation

A steady current of 1 ampere flows through a conductor. Calculate the number of electrons that flows through any section of the conductor is 1 second (charge on electron `1.6 xx 10 ^(-19)` Coulomb)
Electric current: The amount of charge Q flowing through a particular area of cross section in unit time "t. is called clectric current, ie., Electrict current, `I = Q//t`
SI unit of electric current is ampere One ampere of current is that current which flow when or.e coulomb of electric charge tlowing through a particular area of cross scction of the conductor is one second, i.e, `1A = 1 CS^(-1)`
The direction of conventional current is A to B, ie., opposite to the direction of flow of electrons. In a metal, flow of electrons carrying negative charge constitucs the current.
Direction of flow of electrons given the direction of electronic current by convention, the direction of flow of positive charge is taken the direction of flow of positive charge is taken as the direction of conventional current charge
= q = ne
For q = 1 Coulomb
`(1C)/(1.6xx10^(-19)C)= (10^(19))/(1.6)= 6.25xx10^(18)` electrons