How is energy consumed in a circuit calculated?

The calculation of energy consumed in a circuit is based on the relationship between power, time, and energy. Power is defined as the rate at which energy is used or transferred, and it is measured in watts (W). When calculating energy consumed, you multiply the power (in watts) by the time (in seconds) for which the power is utilized.

This relationship is captured by the formula:

Energy (in joules) = Power (in watts) × Time (in seconds).

Thus, the correct answer reflects this fundamental principle. By using this formula, you can easily determine the total energy consumed over a specified period, which is essential for analyzing the performance and efficiency of electrical circuits.

In contrast, the other options do not accurately represent how energy consumption is calculated. For instance, energy cannot be correctly determined by dividing power by time, as energy is defined based on the product of these two quantities. Similarly, the relationship of energy to power and voltage or voltage divided by current does not directly address the calculation of energy consumed in a circuit.