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

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

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Electronic Principles
The peak value of a sine waveform is:

the amplitude at 1.41 times the maximum value
the maximum positive or negative value
None of these
the amplitude at 90% of the maximum value
the amplitude at 70.7% of the maximum value

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Electronic Principles
Which one of the following statements is true for current flowing in a parallel circuit?

The amount of current flow through each branch of a parallel circuit can be different, depending on the resistance of each branch part and the amount of voltage applied to it
None of these
The total current in a parallel circuit is always less than the smallest amount of current
The same current always flows through every part of a parallel circuit
The total current in a parallel circuit is equal to the total voltage multiplied by the total resistance

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