What is the relationship between voltage, current, and resistance in a simple circuit?

• A. V = I + R
• B. V = I / R
• C. V = I × R
• D. R = V / I

Answer: (C)

The relationship between voltage, current, and resistance in a simple circuit is accurately described by the equation V = I × R, which states that voltage (V) is equal to the current (I) multiplied by the resistance (R). This is known as Ohm's Law, a fundamental principle in electrical theory that illustrates how these three parameters interact with each other.

When analyzing a circuit, if you know the current flowing through it and the resistance within that circuit, you can easily calculate the voltage across the components. Conversely, if you know the voltage and the resistance, you can determine the current. This relationship is crucial in designing and understanding electrical circuits, ensuring that components operate within their specified limits.

The other provided equations do not represent the correct relationship dictated by Ohm's Law, leading to confusion about how these fundamental electrical properties interrelate.