Which one of. the following phrases most accurately describes the nature of a pu

Question

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

Options:

A . The voltage reverses polarity periodically

B . The voltage remains at one polarity but changes value periodically

C . The voltage causes current to flow in two directions at the same time

D . None of these

E . The voltage remains at one polarity and at a steady level

Answer: Option B

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