What does Ohm's Law describe about the relationship between current, voltage, and resistance?

Prepare for the Electrical Craft Certification Year 2 Test. Study with comprehensive questions, flashcards, and explanations to boost your confidence. Equip yourself for success in your certification journey.

Ohm's Law is a fundamental principle in electrical engineering that defines the relationship between electric current, voltage, and resistance. The law states that the current flowing through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance of the conductor.

The correct answer captures this relationship effectively: it emphasizes that as voltage increases, the current will also increase if the resistance remains constant. Conversely, if the resistance increases while keeping the voltage constant, the current will decrease. Mathematically, this principle is expressed as:

[ I = \frac{V}{R} ]

Where:

  • ( I ) represents the current,

  • ( V ) represents the voltage, and

  • ( R ) represents the resistance.

This expression shows how voltage and resistance affect current, thereby illustrating the nature of their relationship as defined by Ohm's Law. Understanding this law is crucial for analyzing simple electrical circuits, determining circuit behavior, and troubleshooting electrical issues.

Discerning this inherent relationship is vital for anyone in the electrical field, as it forms the foundation for more complex electrical concepts and applications.

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