Question

Which of the following is not true for electric current?
1. The flow of electric charge through a conductor constitutes electric current.
2. Electric current is vector quantity
3. Electric current is scalar quantity
4. SI unit of current is Coulomb per second

Answer 1

Correct Answer - Option 2 : Electric current is vector quantity

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:

• From the above discussion, it is clear that electric current is not a vector quantity but a scalar. Hence, option (2) is correct.