Electronic Principles
What form of energy is used to maintain an imbalance of charges between the terminals of a battery?

Solar energy
Mechanical energy
Electronical energy
Chemical energy
None of these

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

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

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