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

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

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Electronic Principles
When applying a square waveform to a capacitor, the circuit tends to:

round off both the voltage and current waveforms
peak the voltage and round off the current waveforms
peak both the voltage and current waveforms
None of these
peak the current and round off the voltage waveforms

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

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

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