What do the symbols I, E, and R represent in Ohm's Law?

The symbols I, E, and R in Ohm's Law represent Current, Electromotive Force (Voltage), and Resistance, respectively. In this context, Ohm’s Law is a fundamental principle in electrical engineering and physics which articulates the relationship between these three quantities.

Current (I) is the flow of electric charge and is measured in amperes (A). Electromotive Force (E), commonly referred to as voltage, represents the potential difference that drives the current through a circuit, measured in volts (V). Resistance (R) refers to the opposition to the flow of current in a circuit, measured in ohms (Ω).

Ohm's Law can be mathematically expressed as: E = I * R. This equation highlights how voltage (E) is the product of the current (I) and the resistance (R), making it crucial for calculating one of these variables when the other two are known. Understanding this relationship is vital for analyzing and designing electrical circuits.

The other options represent terms that are not standard definitions associated with Ohm's Law or apply to different areas of electrical theory, leading to confusion or misinterpretations of the law's application.