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Statement-1: Electric current is a scala...

Statement-1: Electric current is a scalar
Statement-2: All fundamental physical quantities are scalars

A

Statement-1 is true and statement -2 is true

B

Statement -1 is true and statement-2 is false

C

Statement-1 is false and statement -2 is true

D

Statement-1 is false and statement -2 is false

Text Solution

AI Generated Solution

The correct Answer is:
To analyze the statements provided in the question, we will evaluate each statement one by one and determine their validity. ### Step 1: Evaluate Statement-1 **Statement-1**: Electric current is a scalar. - Electric current (I) is defined as the flow of electric charge. It is measured in amperes (A). - In physics, a scalar quantity is one that has only magnitude and no direction. - Although electric current has a direction (the direction of flow of positive charge), it is treated as a scalar quantity because it follows scalar addition rules rather than vector addition rules. - According to Kirchhoff's Current Law (KCL), the sum of currents entering a junction equals the sum of currents leaving the junction. This law holds true regardless of the direction of the currents involved, indicating that current can be added algebraically without regard to direction. Thus, **Statement-1 is correct**. ### Step 2: Evaluate Statement-2 **Statement-2**: All fundamental physical quantities are scalars. - Fundamental physical quantities include mass, length, time, electric charge, temperature, luminous intensity, and amount of substance. - Scalars are quantities that have only magnitude, while vectors have both magnitude and direction. - Fundamental quantities are defined based on their inherent properties and do not include directional components. For instance, mass is simply a measure of the amount of matter, and time is a measure of duration. - While some derived quantities (like velocity and force) are vectors, the fundamental quantities themselves do not have direction and are therefore scalars. Thus, **Statement-2 is also correct**. ### Conclusion Both statements are correct. Therefore, the answer to the question is that both Statement-1 and Statement-2 are true. ### Final Answer Both statements are correct.
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