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Alternating Current and Voltage

Alternating Current and Voltage
If the rms voltage drop across a 15 k resistor is 16 V, the peak current through the resistor is

1 mA
10 mA
15 mA
1.5 mA

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Alternating Current and Voltage
If a sine wave goes through 10 cycles in 20 s, the period is

100 s
4 s
20 s
2 s

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Alternating Current and Voltage
The average value of a 12 V peak sine wave over one complete cycle is

0 V
7.64 V
6.37 V
1.27 V

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Alternating Current and Voltage
A 20 kHz pulse waveform consists of pulses that are 15 s wide. The duty cycle

cannot be determined
is 1%
is 30%
is 100%

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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°
0°
None of these

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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%
100%
1%
50%

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