What is meant by electric current? Name and define its si unit. In a conductor electrons are flowing from b What is the direction of conventional current? Give justification for your answer. A steady current of 1 ampere flows through a conductor. Calculate the number of electrons that flows through any section of the conductor in 1 second. (charge on electron 1.6 x 10-19 coulomb). Answer?
Answers
Answer:
Explanation:
Electric Current is the rate of flow of charge, I = Q/t where I is current, Q is charge and t is time. It is a scalar quantity. i.e it has only magnitude no direction.
Ampere is SI unit of current.
1 ampere is defined as the current when 1 C of charge is passing through a conductor for 1 second.
The direction of conventional current is from A to B, i.e Opposite to the direction of flow of electrons. In a metal flow of metal carries a negative charge constitutes the current. Direction of flow of electrons gives the direction of electronic current by convention, the direction of flow of positive charge is taken as the direction of the conventional current.
Charge = Q = ne
For q = 1 coulomb
n = 1 C/1.6 × 10⁻¹⁹ C
N = 6.25 × 10¹⁸ Electrons.