Electronic Principles
Which one of the following devices is most often used for measuring opposition to current flow in a circuit?

Ammeter
Ohmmeter
Voltmeter
None of these
Wattmeter

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

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

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Electronic Principles
What is a negative ion?

An atom that contains more protons than electrons
An atom that contains more protons than neutrons
An atom that contains more electrons than neutrons
An atom that contains more electrons than protons
None of these

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