Basic Automotive Electrical Diagnostics Practice Test – Complete Exam Prep 2025

Ohm's Law is fundamental in electrical engineering and describes the relationship between voltage, current, and resistance in an electrical circuit. It is mathematically expressed by the formula V = I × R, where V represents voltage (in volts), I represents current (in amperes), and R represents resistance (in ohms). This means that the voltage in a circuit is equal to the current flowing through it multiplied by the resistance of the circuit.

Understanding this relationship is key to diagnosing and troubleshooting electrical issues in automotive systems, as it allows technicians to calculate one of the three variables if the other two are known. Mastery of Ohm's Law helps in accurately interpreting multimeter readings and ensuring that electrical components operate correctly within their specified parameters.

Other options mentioned pertain to various electricity concepts, but they do not accurately define Ohm's Law. The relationship described in the correct answer is specifically focused on voltage, current, and resistance, which is central to understanding basic electrical principles.