Electronic Principles
Which one of the following equations most directly determines the power dissipation of a resistance when you know the power dissipation of a resistance when you know the voltage drop and current?

P = IE
I = P/E
None of these
P = I2R
P = E2/R

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Electronic Principles
What is the difference between the kinds of charges for an electron and a proton?

None of these
An electron has a negative charge and a proton has a positive charge
An electron has a negative charge and a proton has no charge
An electron has a positive charge and a proton has no charge
An electron has a positive charge and a proton has a negative charge

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

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

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Electronic Principles
The total inductive reactance of a parallel inductor circuit is:

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

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