Which is equal to 1,000,000 picofarads?
The correct answer is B: 1 microfarad. 1,000,000 picofarads equals 1 microfarad. The prefix 'pico-' means one-trillionth (10^-12), and 'micro-' means one-millionth (10^-6). To convert picofarads to microfarads, divide by 1,000,000.
1,000,000 pF ÷ 1,000,000 = 1 μF. This is a capacitance unit conversion. Picofarads (pF) are used for very small capacitances (like in RF circuits), while microfarads (μF) are used for larger capacitances (like in power supply filters). Understanding these conversions is important for reading capacitor specifications and circuit design.
Exam Tip
Picofarads to microfarads = Divide by 1,000,000. Remember: To convert picofarads to microfarads, divide by 1,000,000. 1,000,000 pF ÷ 1,000,000 = 1 μF.
Memory Aid
"**P**icofarads **T**o **M**icrofarads = **P**ico **M**illion (think 'PTM = PM' = Pico Million, divide by 1 million)"
Real-World Application
A capacitor in an RF circuit might be rated at 1,000,000 picofarads, which equals 1 microfarad. This is a common capacitance value. Understanding that 1,000,000 pF = 1 μF helps you read capacitor specifications correctly, as capacitors might be labeled in either unit.
FCC Part 97.3Key Concepts
Why Other Options Are Wrong
Option A: Incorrect. 0.001 microfarads equals 1,000 picofarads, not 1,000,000 picofarads. You're off by a factor of 1,000.
Option C: Incorrect. 1000 microfarads equals 1,000,000,000,000 picofarads (1 trillion pF), way too large.
Option D: Incorrect. 1,000,000,000 microfarads is way too large. You multiplied instead of dividing.
题目解析
The correct answer is B: 1 microfarad. 1,000,000 picofarads equals 1 microfarad. The prefix 'pico-' means one-trillionth (10^-12), and 'micro-' means one-millionth (10^-6). To convert picofarads to microfarads, divide by 1,000,000. 1,000,000 pF ÷ 1,000,000 = 1 μF. This is a capacitance unit conversion. Picofarads (pF) are used for very small capacitances (like in RF circuits), while microfarads (μF) are used for larger capacitances (like in power supply filters). Understanding these conversions is important for reading capacitor specifications and circuit design.
考试技巧
Picofarads to microfarads = Divide by 1,000,000. Remember: To convert picofarads to microfarads, divide by 1,000,000. 1,000,000 pF ÷ 1,000,000 = 1 μF.
记忆口诀
**P**icofarads **T**o **M**icrofarads = **P**ico **M**illion (think 'PTM = PM' = Pico Million, divide by 1 million)
实际应用示例
A capacitor in an RF circuit might be rated at 1,000,000 picofarads, which equals 1 microfarad. This is a common capacitance value. Understanding that 1,000,000 pF = 1 μF helps you read capacitor specifications correctly, as capacitors might be labeled in either unit.
错误选项分析
Option A: Incorrect. 0.001 microfarads equals 1,000 picofarads, not 1,000,000 picofarads. You're off by a factor of 1,000. Option C: Incorrect. 1000 microfarads equals 1,000,000,000,000 picofarads (1 trillion pF), way too large. Option D: Incorrect. 1,000,000,000 microfarads is way too large. You multiplied instead of dividing.
知识点
Capacitance conversion, Picofarads, Microfarads, Unit conversion
Verified Content
Question from official FCC Technician Class question pool. Explanation reviewed by licensed amateur radio operators.