Cathodic Protection Tester Practice Exam

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Which of the following represents Ohm's Law in terms of current?

Voltage / Resistance
Resistance / Voltage
Voltage + Current
Resistance x Voltage

The correct answer is: Voltage / Resistance

Ohm's Law is a fundamental principle in electrical engineering that defines the relationship between voltage (V), current (I), and resistance (R). It can be mathematically expressed as V = I x R. When rearranging this formula to find the current, it becomes I = V / R. This means that the current flowing in a circuit is directly proportional to the voltage across the circuit and inversely proportional to the resistance. Therefore, the correct representation of Ohm's Law in terms of current is Voltage divided by Resistance. This illustrates how, with a higher voltage, more current will flow if the resistance remains constant, while an increase in resistance will reduce the current for a given voltage. Understanding Ohm's Law is critical for anyone working with electrical systems, as it helps to analyze how different components affect the overall functionality of a circuit.