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

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

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Electronic Principles
Which one of the following statements applies to common, non-rechargeable flashlight batteries?

None of these
Common flashlight batteries are primary wet-cell batteries
Common flashlight batteries are secondary dry-cell batteries
Common flashlight batteries are secondary wet-cell batteries
Common flashlight batteries are primary dry-cell batteries

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Electronic Principles
Which one of the following statements most accurately reflects the nature of ac power?

The current in an ac circuit flows in one direction, but changes value periodically
The current in an ac circuit flows in two directions at the same time
The current in an ac circuit changes direction periodically
The current in an ac circuit flows in one direction at a steady level
None of these

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