What is the relationship between voltage and current to maintain the same power in an electric circuit?

In an electric circuit, power is calculated using the formula P = V × I, where P represents power, V is voltage, and I is current. To maintain the same power in the circuit, if the voltage increases, the current must decrease to ensure that the product remains constant. Conversely, if the current increases, the voltage must decrease to keep the power at the same level. This is why one must increase while the other decreases to maintain consistent power output.

This relationship illustrates the fundamental principles of electrical circuits and is integral to understanding how voltage and current interact in various applications, including residential, commercial, and industrial electrical systems. It highlights the balance that must be achieved in circuit design and operation to ensure efficient energy usage while adhering to safety standards.