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Alternating Current and Voltage

Alternating Current and Voltage
If the rms current through a 4.7 k resistor is 4 mA, the peak voltage drop across the resistor is

18.8 V
26.6 V
2.66 V
4 V

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Alternating Current and Voltage
A sawtooth wave has a period of 10 ms. Its frequency is

1,000 Hz
50 Hz
10 Hz
100 Hz

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Alternating Current and Voltage
One sine wave has a positive-going zero crossing at 15° and another sine wave has a positive-going zero crossing at 55°. The phase angle between the two waveforms is

45°
40°
None of these
0°

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Alternating Current and Voltage
A phasor represents

the width of a quantity
the magnitude of a quantity
the magnitude and a quantity direction
the phase angle

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Alternating Current and Voltage
When a sine wave has a frequency of 100 Hz in 12 s it goes through

12 cycles
1/100 cycle
120 cycles
1,200 cycles

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Alternating Current and Voltage
If the rms current through a 6.8 k resistor is 8 mA, the rms voltage drop across the resistor is

8 V
54.4 V
5.44 V
7.07 V

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