What is Ohm's Law?

What is Ohm's Law?

• A. The relationship between voltage, current, and resistance expressed as V=IR
• B. The formula for calculating power in a circuit
• C. The principle that current can only flow in a closed circuit
• D. The law governing magnetic fields around a conductor

Answer: (A)

Ohm's Law describes the fundamental relationship between voltage, current, and resistance in an electrical circuit. It states that the voltage across a conductor is directly proportional to the current flowing through it, with the resistance acting as the proportionality constant. This is mathematically expressed as V=IR, where V is the voltage in volts, I is the current in amperes, and R is the resistance in ohms. Understanding this relationship is crucial for analyzing and designing electrical circuits, as it helps in calculating how much current will flow at a given voltage and resistance. This foundational concept is essential for any electronic technician, as it offers a basis for troubleshooting and developing practical applications in electronics.

Ohm's Law describes the fundamental relationship between voltage, current, and resistance in an electrical circuit. It states that the voltage across a conductor is directly proportional to the current flowing through it, with the resistance acting as the proportionality constant. This is mathematically expressed as V=IR, where V is the voltage in volts, I is the current in amperes, and R is the resistance in ohms. Understanding this relationship is crucial for analyzing and designing electrical circuits, as it helps in calculating how much current will flow at a given voltage and resistance. This foundational concept is essential for any electronic technician, as it offers a basis for troubleshooting and developing practical applications in electronics.