Question

Distinguish between direct current and alternative current

Answer 1

AC vs. DC (Alternating Current vs. Direct Current) Electricity flows in two ways: either in an alternating current (AC) or in a direct current (DC). ... The difference between AC and DC lies in the direction in which the electrons flow. In DC, the electrons flow steadily in a single direction, or "forward."

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Answer 2

DIRECT CURRENT
DIRECT current flows in one direction
it can be controlled by using ohmic resistances
power wastage is more
the polarites are fixed
AC CURRENT
it flows in any direction
it can be controlled without much energy loss
power wastage is less
polarites are not fixed