Question

What is the reason current is a scalar quantity?

Answer 1

Reasons for current being a scalar quantity are as follows :

• Current refers to instantaneous flow of current through a specified cross sectional area of a conductor.

• $\boxed{\rm{I = \dfrac{dq}{dt}}}$

• It has Magnitude as well as Directions.

• However , current doesn't follow the Law of Vector Addition.

• Instead, it follows the Kirchoff's Junction Law of Current.

If it had followed the vector law, then we would have called current as a vector.

Hence, Current is a Scalar Quantity.

Answer 2

Answer:

scalar quantitis are those quantities which have  magnitude all that quantity are termed as scalar

generally scalar quantities are in number only

examples of a  scalar quantity

• mass

• time

• area

• temperature

• but exceptionally current is scalar quantity becoz vector quantities are those which have both magnitude and direction and also they follow the law of addition vector and  law of sum of a   parallelogram

• in case of current ,current have magnitude and direction but does not follow the law of vector addition when we add 2 current magnitudes it gives a sum does not follow vector addition