What letter(s) represent current/amps?

The representation of current or amps in electrical terms is denoted by the letter "I." This is based on historical conventions established by the physicist André-Marie Ampère, after whom the unit of electric current, the ampere (A), is named.

In electrical formulas and equations, current (I) is frequently used to describe the flow of electric charge, effectively quantifying how much charge passes through a conductor over a specified time. The letter "A" represents the unit of measurement for this current, known as amperes.

Other options discuss different electrical concepts, such as voltage (V), resistance (R), power (P), energy (E), capacitance (C), and alternating current (AC), which are essential in understanding electrical systems but do not pertain to the representation of current itself. This distinction highlights the importance of knowing specific notations for various electrical parameters.