What is the name of a device that converts sound waves to electrical waves?
Answer: Option A
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If the frequency of a radio wave is increased, then its wavelength will:
What is the rms voltage value of an ac signal whose peak oscilloscope display uses 3 major divisions above the zero setting? (V/cm = 5)
Answer: Option D
What is the peak-to-peak current value when an ammeter measures a 20 mA value?
How long would it take to transmit an electromagnetic wave to a receiving antenna 1,000 miles away?
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