BioMedical Admissions Test (BMAT) 2025 – 400 Free Practice Questions to Pass the Exam

Current (I) is fundamentally defined as the rate of flow of electric charge over time. Mathematically, this relationship is expressed using the formula I = Q/t, where I represents current measured in amperes (A), Q stands for charge measured in coulombs (C), and t denotes time measured in seconds (s).

In this definition, the current is determined by how much charge (Q) has passed through a point in the circuit in a specific amount of time (t). Therefore, if you take the total charge that flows and divide it by the time taken for that charge to flow, you obtain the current, which indicates how much charge is flowing per unit of time.

This foundational understanding of electric current is essential in many areas of physics and engineering, particularly in analyzing circuit behavior and designing electronic systems. The other options do not reflect the relationship correctly, as they do not follow the established definition or units used for current.