Today's nanotechnology-produced computer transistors are roughly equivalent in size to which of the following?

The correct answer is that today's nanotechnology-produced computer transistors are roughly equivalent in size to a virus. This aligns with advancements in nanotechnology, where the dimensions of technological components are measured on the nanoscale. Transistors are often manufactured at sizes that range from 5 to 10 nanometers.

In comparison, a virus typically ranges in size from about 20 to 300 nanometers, falling within a similar scale as modern transistors. This microscopic size is critical for enhancing the performance and efficiency of electronic devices.

On the other hand, a fingernail and a human hair are dramatically larger in scale than the nanoscale measurements, as a fingernail can be a few millimeters in width, and human hair is approximately 70,000 to 100,000 nanometers thick, far exceeding the size of transistors. An atom, while smaller than a virus, does not serve as a proper comparison since transistor sizes are measured in the range of several atoms, making them larger than single atoms but smaller than viruses. This provides a clearer context to understand the size and technology behind today’s transistor developments.