Which of the following is equivalent to 0.03 Volts?

To understand why 0.03 volts is equivalent to 30 millivolts, it's important to convert volts into millivolts. One volt is equivalent to 1,000 millivolts because "milli" denotes one-thousandth. Therefore, to convert volts to millivolts, you multiply the voltage in volts by 1,000.

In this case, starting with 0.03 volts:

0.03 volts * 1,000 millivolts/volt = 30 millivolts.

This conversion illustrates that 0.03 volts indeed equals 30 millivolts, making it the correct choice.

Understanding the metric prefixes is key here. For example, microvolts are a much smaller unit (one-millionth of a volt), while volts are much larger units compared to the millivolt measurement. Hence, understanding the scale of these units clarifies why 30 millivolts aligns with 0.03 volts, while the other options represent vastly different quantities.