AC Fundamentals – Exercise – 2

56. If the rms current through a 4.7 kΩ resistor is 4 mA, the peak voltage drop across the resistor is ________.

(a) 4 V
(b) 18.8 V
(c) 26.6 V
(d) 2.66 V

57. A waveform has a baseline of 3 V, a duty cycle of 20%, and an amplitude of 8 V. The average voltage value is ________.

(a) 4 V
(b) 4.6 V
(c) 1.6 V
(d) 11 V

58. A sawtooth wave has a period of 10 ms. Its frequency is ________.

(a) 10 Hz
(b) 50 Hz
(c) 100 Hz
(d) 1,000 Hz

59. If a sine wave goes through 10 cycles in 20 μs, the period is ________.

(a) 20 s
(b) 4 s
(c) 2 s
(d) 100 s

60. A signal with a 400 μs period has a frequency of ________.

(a) 250 Hz
(b) 2,500 Hz
(c) 25,000 Hz
(d) 400 Hz

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