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Alternating Current and Voltage

Alternating Current and Voltage
A sinusoidal current has an rms value of 14 mA. The peak-to-peak value is

16 mA
45.12 mA
22.6 mA
39.6 mA

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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 lags wave B by 105°.
Wave A leads wave B by 105°.
Wave A lags wave B by 15°.
Wave A leads wave B by 15°.

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Alternating Current and Voltage
If the peak of a sine wave is 13 V, the peak-to-peak value is

6.5 V
26 V
None of these
13 V

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Alternating Current and Voltage
A square wave has a period of 60 s. The first odd harmonic is

500 kHz
5 kHz
33.33 kHz
50 kHz

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Alternating Current and Voltage
How many degrees are there in /3 rad?

27°
180°
60°
6°

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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
4 V
18.8 V
26.6 V

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