Answer / himanshu singh

AC stands for alternating current.It has frequency in it.It
flows in single,dual or 3 phase as per requirement.Thus it
has phase and neutral i.e return...also it has pulses and
follows sine graph.
Where as DC stands for Direct Current.It has zero frequency
and has one positive and one negative.Infact Dc is much
powerful than AC.

Answer / rajesh kumar

amplitude of an ac voltage continiously with time
it has a frequency
dc voltage does not have frequency
the amplitude does not vary with time

May I have a brief note above the voltage barriers? Whats is the purpose? Please mail me if you've operational details, mail id: rajkumar.diice@gmail.com

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