What does the term "refresh rate" refer to in electronics?

The term "refresh rate" specifically refers to the number of times a display updates its image per second, which is measured in hertz (Hz). A higher refresh rate means that the image is updated more frequently, providing smoother motion and reducing flicker, which enhances the overall viewing experience. This is particularly important in applications such as gaming or video playback, where fast-moving images are common and require a high refresh rate to appear clear and stable.

The other options do not accurately define refresh rate. For example, power consumption is related to how much energy a device uses, while the duration of a signal pulse pertains to the time a signal is either high or low in electronics, and the capacity of storage devices refers to how much data they can hold. Hence, option B correctly captures the essence of what refresh rate represents in the context of electronic displays.