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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
5.44 V
8 V
54.4 V
7.07 V
5.44 V
8 V
54.4 V
7.07 V
Answer
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Related Question
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
2 ms
1.5 ms
3,000 s
0.0045 s
2 ms
1.5 ms
3,000 s
0.0045 s
Answer
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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
15 mA
10 mA
1.5 mA
1 mA
15 mA
10 mA
1.5 mA
Answer
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Alternating Current and Voltage
Sine wave A has a positive-going zero crossing at 45°. Sine wave B has a positive-going zero crossing at 60°. Which of the following statements is true?
Wave A leads wave B by 15°.
Wave A leads wave B by 105°.
Wave A lags wave B by 15°.
Wave A lags wave B by 105°.
Wave A leads wave B by 15°.
Wave A leads wave B by 105°.
Wave A lags wave B by 15°.
Wave A lags wave B by 105°.
Answer
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Alternating Current and Voltage
When a sine wave has a frequency of 100 Hz in 12 s it goes through
1,200 cycles
1/100 cycle
12 cycles
120 cycles
1,200 cycles
1/100 cycle
12 cycles
120 cycles
Answer
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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 30%
is 1%
is 100%
cannot be determined
is 30%
is 1%
is 100%
Answer
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