In Ohm's Law, what does the formula V = IR stand for?

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

Answer: (A)

The formula V = IR in Ohm's Law represents the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit. In this equation, voltage is defined as the product of current and resistance. This means that for a given resistance, increasing the current will increase the voltage across the components in the circuit, and vice versa.

This foundational concept is critical in understanding how electrical circuits operate and is widely applied in various applications, such as designing circuits, troubleshooting, and analyzing electrical systems. Knowing that voltage is the driving force in a circuit, we can effectively calculate how much current flows through a resistor when a specific voltage is applied.