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

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

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Electronic Principles
Voltage is

The smallest electrically charged particle
Trie force that causes electrons to flow
The number of free electrons in an atom
None of these
The flow of charged particles through a material

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Electronic Principles
Doubling the operating frequency of a purely inductive circuit:

None of these
doubles the amount of current through the inductors
increases the current, but by an amount that can be determined only by doing a complete analysis of the circuit
has no effect on the current through the inductors
cuts the current through the inductors one-half

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