What are the three main values in Ohm's law?

Ohm's law is a fundamental principle in electrical engineering and relates the three core attributes of electrical circuits: voltage, current, and resistance. The law states that the current (I) flowing through a conductor between two points is directly proportional to the voltage (V) across the two points and inversely proportional to the resistance (R) of the conductor. This relationship can be expressed mathematically as V = I × R.

Voltage is the electrical potential difference that drives the current through the circuit. Current represents the flow of electric charge, and resistance is a measure of how much the conductor opposes the flow of current. Understanding these three values is essential for analyzing electrical systems and designing circuits effectively.

The other options mix in terms that do not align with Ohm’s law or include variables that do not influence the relationship described by the law. Temperature might affect resistance under certain conditions, but it is not a primary component of Ohm's law itself. Similarly, while power is an important concept in electrical systems, it is derived from voltage and current and does not form part of the basic relationship defined by Ohm’s law.