What is the relationship between electrical power, current, and voltage?

• A. It is the product of current and voltage
• B. It is the sum of current and voltage
• C. It is the difference between current and voltage
• D. It is the ratio of current to voltage

Answer: (A)

The relationship between electrical power, current, and voltage is defined by the formula:

Power (P) = Current (I) × Voltage (V)

This means that electrical power is directly proportional to both the current flowing through a circuit and the voltage across that circuit. When either current or voltage increases, the power will also increase, which is a fundamental principle in electrical science. This relationship is essential for understanding how electrical systems operate and is foundational in calculating the energy consumed by electrical devices.

The other relationships mentioned, such as the sum, difference, or ratio of current and voltage, do not accurately represent how electrical power is derived. Electrical power cannot simply be calculated by adding or subtracting current and voltage, nor is it described as a ratio; those terms apply to different concepts within electrical theory and would not provide an accurate representation of power in a circuit.