Electronic Principles
What are the main parts of an atom?

Protons only
Electrons, protons, and neutrons
Electrons, ions, and neutrons
None of these
Electrons, protons, and ions

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

that would be repelled by the south pole of another magnet
that has its molecules arranged in a random pattern
None of these
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
For a pure capacitor:

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

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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
The total current in a parallel circuit is always less than the smallest amount of current
None of these
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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Electronic Principles
The total capacitance of a series capacitor circuit is:

equal to the sum of the individual capacitance values
equal to the source voltage divided by total current
None of these
less than the value of the smallest capacitor
equal to the sun of the individual capacitive-reactance values

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