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Alternating Current and Voltage

Alternating Current and Voltage
A phasor represents

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

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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

2.66 V
18.8 V
26.6 V
4 V

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Alternating Current and Voltage
A sine wave with a period of 4 ms is changing at a faster rate than a sine wave with a period of

1.5 ms
0.0045 s
2 ms
3,000 s

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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

54.4 V
7.07 V
8 V
5.44 V

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Alternating Current and Voltage
A sine wave of 15 kHz is changing at a faster rate than a sine wave with a frequency of

12 kHz
18 kHz
1.3 MHz
25 kHz

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Alternating Current and Voltage
A pulse waveform has a high time of 8 ms and a pulse width of 32 ms. The duty cycle is

25%
1%
50%
100%

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