Electronic Principles
What is the primary difference between primary and secondary cell batteries?

Secondary-cell batteries can be recharged and used many times, whereas primary-cell batteries cannot be properly recharged
Primary-cell batteries must be recharged at a much slower rate that secondary-cell batteries
Primary-cell batteries can be recharged and used many times, whereas secondary-cell batteries cannot be properly recharged
Primary-cell batteries use chemical cells, whereas secondary-cell batteries use an alternative energy source, such as thermal or magnetic energy, to supplement their outputs
None of these

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Electronic Principles
The rms value of a sine waveform is:

None of these
the time required to complete one full cycle
the number of cycles completed in one second
equal to 1.41 times the peak amplitude
equal to 0.707 times the peak amplitude

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Electronic Principles
What is a free electron?

An electron that has twice the amount of charge of a normal electron
An electron that has been freed from its parent atom
None of these
An electron that has no electrical charge
An electron that costs nothing

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