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The period of a signal is 100ms. Then the frequency of this signal in kilohertz is ______.

Frequency is the reciprocal of the period: \(f=\frac{1}{100\text{ ms}}=\frac{1}{0.1\text{ s}}=10\) Hz. Since 1 kHz = 1000 Hz, 10 Hz \(=0.01\) kHz \(=10^{-2}\) kHz. Choosing…

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The period of a signal is 100ms. Then the frequency of this signal in kilohertz is ______.

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Correct answer C

Frequency is the reciprocal of the period: f=1100 ms=10.1 s=10f=\frac{1}{100\text{ ms}}=\frac{1}{0.1\text{ s}}=10 Hz. Since 1 kHz = 1000 Hz, 10 Hz =0.01=0.01 kHz =10−2=10^{-2} kHz. Choosing 10 confuses hertz with kilohertz, and 10−110^{-1} kHz would be 100 Hz.

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