What is the formula that relates Volts, Current (I), and Resistance?

What is the formula that relates Volts, Current (I), and Resistance?

• A. V = I + R
• B. V = I ÷ R
• C. V = I x R
• D. V = R - I

Answer: (C)

The formula that relates Volts (V), Current (I), and Resistance (R) is expressed as V = I x R. This is known as Ohm’s law, which states that the voltage across a conductor is directly proportional to the current flowing through it, provided the temperature and material remain constant. In this equation, the current (I) is measured in amperes, voltage (V) in volts, and resistance (R) in ohms. Understanding this relationship is fundamental in electrical circuits, as it allows for the calculation of one variable if the other two are known. For instance, if you know the current flowing through a resistor and the resistance of that resistor, you can easily calculate the voltage drop across it. This principle is crucial not only for understanding basic electrical concepts but also for practical applications in designing and troubleshooting electrical systems.

The formula that relates Volts (V), Current (I), and Resistance (R) is expressed as V = I x R. This is known as Ohm’s law, which states that the voltage across a conductor is directly proportional to the current flowing through it, provided the temperature and material remain constant. In this equation, the current (I) is measured in amperes, voltage (V) in volts, and resistance (R) in ohms.

Understanding this relationship is fundamental in electrical circuits, as it allows for the calculation of one variable if the other two are known. For instance, if you know the current flowing through a resistor and the resistance of that resistor, you can easily calculate the voltage drop across it. This principle is crucial not only for understanding basic electrical concepts but also for practical applications in designing and troubleshooting electrical systems.