difference Between ac and dc
Answers
ac is alternating current and Dc is direct current
Answer:
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Explanation:
Electricity flows in two ways: either in an alternating current (AC) or in a direct current (DC). Electricity or "current" is nothing but the movement of electrons through a conductor, like a wire. 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." In AC, electrons keep switching directions, sometimes going "forward" and then going "backward."
Alternating current is the best way to transmit electricity over large distances
Comparison chart
Alternating Current versus Direct Current comparison chart
Alternating Current Direct Current
Amount of energy that can be carried Safe to transfer over longer city distances and can provide more power. Voltage of DC cannot travel very far until it begins to lose energy.
Cause of the direction of flow of electrons Rotating magnet along the wire. Steady magnetism along the wire.
Frequency The frequency of alternating current is 50Hz or 60Hz depending upon the country. The frequency of direct current is zero.
Direction It reverses its direction while flowing in a circuit. It flows in one direction in the circuit.
Current It is the current of magnitude varying with time It is the current of constant magnitude.
Flow of Electrons Electrons keep switching directions - forward and backward. Electrons move steadily in one direction or 'forward'.
Obtained from A.C Generator and mains. Cell or Battery.
Passive Parameters Impedance. Resistance only
Power Factor Lies between 0 & 1. it is always 1.
Types Sinusoidal, Trapezoidal, Triangular, Square. Pure and pulsating.
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