Question

The direction of flow of electric current is 
1. In the direction of flow of electron
2. Opposite to the flow of positive charge
3. Opposite to the flow of electron
4. Independent of flow of positive or negative charge

Answer 1

Correct Answer - Option 3 : Opposite to the flow of electron

CONCEPT:

ELECTRIC CURRENT:

• The flow of electric charge per unit time is known as electric current
• If one coulomb of charge crosses an area in one second, then the current thought that area is one Ampere(A) 
• SI unit of current is Ampere (A) or coulomb per second 

\(⇒I = \frac{Q}{T} \)

• Where I is Electric current, Q is electric charge and T is time
• Electric current is a scalar quantity
• Although, Electric current has both magnitude and direction yet it is a scalar quantity. This is because the law of ordinary Algebra is used to add electric current and the law of vector addition is not applicable to the addition of electric.

EXPLAINATION:

Conventional and electric currents:

• By convention, the direction of motion of the positive charge is taken as the direction of the electric current 
• A negative charge moving in one direction is equivalent to an equal positive charge moving in the opposite direction
• As the electron is negatively charged particles so the direction of the electronic current is opposite to that of the conventional current.
• ​Hence, the direction of the electric current is opposite to the flow of the electron.