ARRL Technician Practice Exam

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Prepare for the ARRL Technician Exam. Access flashcards and multiple choice questions with detailed explanations. Get ready to become a certified amateur radio operator!

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How many milliamperes is 1.5 amperes?

150 milliamperes
1,500 milliamperes
15 milliamperes
1,050 milliamperes

The correct answer is: 1,500 milliamperes

To convert amperes into milliamperes, it's essential to understand the relationship between these two units of current. One ampere is equal to 1,000 milliamperes. Therefore, to convert 1.5 amperes into milliamperes, you multiply by 1,000: 1.5 A × 1,000 = 1,500 mA. This calculation correctly identifies that 1.5 amperes is equivalent to 1,500 milliamperes. Understanding the conversion factor is fundamental in electrical calculations, as it allows for more precise measurements, especially in circuits where smaller current values are commonly used.