What does Ohm's Law state?

Ohm's Law is a fundamental principle in electrical engineering that describes the relationship between voltage, current, and resistance in a circuit. According to Ohm's Law, voltage is equal to the product of current and resistance. This means that if you know the current flowing through a conductor and its resistance, you can calculate the voltage across it.

The formula can be expressed as:

Voltage (V) = Current (I) x Resistance (R).

In this context, when current increases while resistance remains constant, the voltage also increases. Conversely, if the resistance increases while the current is held constant, the voltage will also increase.

Understanding this relationship is essential for analyzing electrical circuits and for troubleshooting electrical issues. It allows engineers and technicians to predict how changes in one variable will affect the others within a circuit.

The other choices do not accurately reflect Ohm's Law or the relationships described by it. For instance, the first choice incorrectly relates voltage to power and resistance, while the third asserts a relationship of power with current and resistance that does not derive from Ohm's Law. Similarly, the fourth choice misstates the relationship by suggesting that resistance can be calculated through voltage and current in such a way that does not align with the established principles of circuit theory.