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

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

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

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

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