Current as Scalar or Vector – Rankers Physics

Basics of Current: Practice Problem & Solution

Assertion (A): Arrows indicating current in different branches of a circuit follow vector- addition laws. Reason (R): Current is a scalar quantity but it adds like vector.  
Both (A) & (R) are true and the (R) is the correct explanation of the (A)
Both (A) & (R) are true but the (R) is not the correct explanation of the (A)
(A) is true but (R) is false
Both (A) and (R) are false

Solution Explained:

To solve this problem, we apply the core principles of Basics of Current. Understanding the underlying formula is key to arriving at the correct answer below:

Assertion (A) is false because current is a scalar quantity and its addition follows Kirchhoff's current law (algebraic sum), not vector addition. Reason (R) is false because while current is a scalar, it does not add like a vector; it adds algebraically.

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