What does Ohm's Law state?

• A. Power equals voltage times current
• B. Voltage equals current divided by resistance
• C. Voltage equals current times resistance
• D. Resistance equals voltage divided by current

Answer: (C)

Ohm's Law states that voltage (V) equals current (I) multiplied by resistance (R). This fundamental principle in electrical engineering explains the relationship between these three crucial electrical quantities. According to Ohm's Law, if you know any two of the values—voltage, current, or resistance—you can calculate the third.

For example, if you have a circuit with a known resistance and you measure the current flowing through it, you can easily determine the voltage across that resistance using the formula derived from Ohm's Law: V = I × R. This concept is essential for troubleshooting electrical systems, designing circuits, and understanding how electrical components interact.