ARRL Technician Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for the ARRL Technician Exam. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

Which of the following is equivalent to 500 milliwatts?

0.05 watts
0.5 watts
5 watts
50 watts

The correct answer is: 0.5 watts

To determine the equivalent of 500 milliwatts in watts, it's essential to understand the conversion between these units of measurement. A milliwatt is one-thousandth of a watt. Therefore, to convert milliwatts to watts, you divide the number of milliwatts by 1,000. In this case, if you take 500 milliwatts and divide it by 1,000, you get: 500 milliwatts ÷ 1,000 = 0.5 watts This aligns perfectly with the second choice. The other options provide values that do not represent 500 milliwatts when converted to watts. For instance, 0.05 watts represents 50 milliwatts, 5 watts is equivalent to 5,000 milliwatts, and 50 watts equals 50,000 milliwatts. Thus, only 0.5 watts correctly represents the conversion from 500 milliwatts.