1. What is the wavelength of a radio signal with a frequency of 1 MHz? 2. If the frequency of a signal is lowered to one-third its original frequency, what happens to its wavelength? Be specific. 3....

1. What is the wavelength of a radio signal with a frequency of 1 MHz?

2. If the frequency of a signal is lowered to one-third its original frequency, what happens to its wavelength? Be specific.

3. What are two differences between ac and dc?

4. Draw an illustration showing one cycle of a 10-V (rms), 1-MHz ac signal. Identify and appropriately label the positive alternation, the period, the peak value, the peakto-peak value, the effective value, and points on the sine wave representing angles of 30°, 90°, and 215°