Electronic Principles
Suppose a voltage source has an ideal voltage of 12V and an internal resistance of 0.5W. For what values of load resistance will the voltage source appear stiff?

5 Ohm
100 Ohm
6 Ohm
50 Ohm or more
None of these

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

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

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Electronic Principles
Which one of the following statements most accurately applies to the frequency of a waveform?

The higher the amplitude of a waveform, the higher its frequency
The actual frequency of a sine waveform is 1.41 times the working frequency
None of these
Unless specified otherwise, the frequency of a waveform is assumed to be 60 Hz
The longer the period of a waveform, the lower its frequency

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Electronic Principles
Which one of the following statements is true for voltage in a parallel circuit?

The total voltage of a parallel circuit is the same as the voltages across each branch
The total voltage is equal to the sum of the voltages across the individual branches in a parallel circuit
The total voltage in a parallel circuit is always less than the value of the smallest voltage
None of these
The total voltage in a parallel circuit is equal to the average value of the individual voltages

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