Electronic Principles
Norton's theorem replaces a complicated circuit facing a load by an

Ideal current source and series resistor
Ideal voltage source and series resistor
Ideal voltage source and parallel resistor
Ideal current source and parallel resistor
None of these

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Electronic Principles
Which one of. the following phrases most accurately describes the nature of a pulsating dc voltage?

The voltage remains at one polarity but changes value periodically
The voltage remains at one polarity and at a steady level
None of these
The voltage causes current to flow in two directions at the same time
The voltage reverses polarity periodically

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Electronic Principles
Which one of the following statements is true for the currents in a series RC circuit?

None of these
The current always has the same amplitude and phase for every part of the circuit
The total current is greater than the sum of the currents for the resistance and capacitance
The total current is less than the sum of the currents for the resistance and capacitance
The total current is equal to the sum of the currents for the resistance and capacitance

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