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?

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

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Electronic Principles
A low-pass filter:

reduces the level of all frequencies by a significant amount
passes lower-frequency signals and reduces higher-frequency signals
None of these
passes higher-frequency signals and reduces lower-frequency signals
has no effect on ac signals

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

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

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

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

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