Electronic Principles
In a pure inductor:

None of these
ac current leads the voltage by 90 degree
ac current is converted to dc voltage
ac current and voltage are exactly in phase
ac current lags the voltage by 90 degree

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Electronic Principles
The total inductance of a series inductor circuit is:

less than the value of the smallest inductor
equal to the sum of the individual inductance values
equal to the source voltage divided by total current
None of these
equal to the sum of the individual inductive-reactance values

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Electronic Principles
The south pole of a magnet is the one:

that would be repelled by the north pole of another magnet
that has its molecules arranged in a random pattern
None of these
that would be attracted to the earth's south magnetic pole
that would be attracted to the earths north magnetic pole

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

None of these
The total resistance in a parallel circuit is equal to the average value of the individual resistances
The total resistance is equal to the sum of the individual resistances in a parallel circuit.
The total resistance of a parallel circuit is equal to the total voltage
The total resistance of a parallel circuit is always less than the value of the smallest resistance

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