One joule of work done in one second is equivalent to how many watts?

The question pertains to the relationship between work, time, and power. In scientific terms, power is defined as the rate at which work is done, and it is measured in watts. One watt is specifically defined as one joule of work done per second.

Therefore, when you have one joule of work being accomplished in one second, this directly aligns with the definition of power, resulting in a measure of one watt. This fundamental relationship is foundational in physics and is crucial for understanding energy and power in electrical and mechanical systems.

The other choices, while related to electrical or mechanical concepts, do not define the relationship between work and time in the context of power. Horsepower is a larger unit of power, so it wouldn't be equivalent to one watt. An ampere measures electrical current and is not a measure of work or power, while a volt measures electrical potential, which also does not provide a direct measurement of power in this context.