Electronic Principles
The peak value of a sine waveform is:

None of these
the amplitude at 1.41 times the maximum value
the amplitude at 90% of the maximum value
the maximum positive or negative value
the amplitude at 70.7% of the maximum value

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Electronic Principles
What is the difference between the kinds of charges for an electron and a proton?

None of these
An electron has a negative charge and a proton has a positive charge
An electron has a positive charge and a proton has no charge
An electron has a negative charge and a proton has no charge
An electron has a positive charge and a proton has a negative charge

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Electronic Principles
The period of a waveform is:

equal to 0.707 times the peak amplitude
the time required for the voltage to rise from 10% to 90% of the peak amplitude
the number of cycles completed in one second
the time required to complete one full cycle
None of these

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Electronic Principles
In a pure inductor:

ac current is converted to dc voltage
ac current leads the voltage by 90 degree
ac current lags the voltage by 90 degree
None of these
ac current and voltage are exactly in phase

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