The

**T5B** section covers math for electronics; decibels, electrical units and the metric system.

Click "Expand" to reveal the questions.

- How many milliamperes is 1.5 amperes?
- 1,500 milliamperes

- What is another way to specify a radio signal frequency of 1,500,000 hertz?
- 1500 kHz

- How many volts are equal to one kilovolt?
- One thousand volts

- How many volts are equal to one microvolt?
- One one-millionth of a volt

- Which of the following is equivalent to 500 milliwatts?
- 0.5 watts

- If an ammeter calibrated in amperes is used to measure a 3000-milliampere current, what reading would it show?
- 3 amperes

- If a frequency readout calibrated in megahertz shows a reading of 3.525 MHz, what would it show if it were calibrated in kilohertz?
- 3525 kHz

- How many microfarads are 1,000,000 picofarads?
- 1 microfarad

- What is the approximate amount of change, measured in decibels (dB), of a power increase from 5 watts to 10 watts?
- 3 dB

- What is the approximate amount of change, measured in decibels (dB), of a power decrease from 12 watts to 3 watts?
- 6 dB

- What is the approximate amount of change, measured in decibels (dB), of a power increase from 20 watts to 200 watts?
- 10 dB

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