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

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

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

The ac voltage lags the current by 90 degree
Resistances provide the only opposition to current flow
Combinations of resistance and inductive reactance provide any opposition to current flow
None of these
Inductive reactance provides the only opposition to current flow

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