Question

Diffrenc between DC And AC current. Explain

Answer 1

AC Vs DC
*Amount of energy that can be carried:
AC-Safe to transfer over longer city distances and can provide more power.
DC-Voltage of DC cannot travel very far until it begins to lose energy.
*Cause of the direction of flow of electrons
AC-Rotating magnet along the wire.
DC-Steady magnetism along the wire.
*Frequency :
AC-The frequency of alternating current is 50Hz or 60Hz depending upon the country.
DC-The frequency of direct current is zero.
*Direction :
AC-It reverses its direction while flowing in a circuit.
DC-It flows in one direction in the circuit.
*Current :
AC-It is the current of magnitude varying with time
DC-It is the current of constant magnitude.
*Flow of Electrons :
AC-Electrons keep switching directions - forward and backward.
DC-Electrons move steadily in one direction or 'forward'.
*Obtained from :
AC-A.C Generator and mains.
DC-Cell or Battery.
*Passive Parameters :
AC-Impedance.
DC-Resistance only
*Power Factor :
AC-Lies between 0 & 1.
DC-it is always 1.
*Types :
AC-Sinusoidal, Trapezoidal, Triangular, Square.
DC-Pure and pulsating.

Hope it help.

Answer 2

1) AC changes its magnitude and direction after equal interval of time
DC flow only at one direction
2) AC can flow over large distance
DC can't travel long distance