Electronic Principles
What kind of battery is most likely included in a cordless electric knife?

Mercury-cell battery
Lead-acid battery
Nicad battery
None of these
Zinc-carbon battery

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Electronic Principles
The total capacitance of a series capacitor circuit is:

equal to the sum of the individual capacitance values
None of these
equal to the sun of the individual capacitive-reactance values
less than the value of the smallest capacitor
equal to the source voltage divided by total current

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Electronic Principles
Which one of the following phrases most accurately describes a purely capacitive circuit?

None of these
Combinations of resistance and capacitive reactance provide any opposition to current flow
Resistances provide the only opposition to current flow
Capacitive reactance provides the only opposition to current flow
The ac voltage leads the current by 90 degree

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