DC current
Direct current (DC) never changes its direction of flow, so it has no frequency.
A Direct Current or DC direct current is a current consisting of charges that flow only in one direction.
The electrons drift predominantly in one direction.
Alternating Current (AC) reverses its flow constantly, unlike DC (constant current) which flows in one direction only.
When electrons always flow in the same direction in the wire it is known a DC (direct current).
by blocking current flow in one direction
by blocking current flow in one direction
Diodes convert AC into DC by allowing current flow in one direction only. Since AC is alternating between plus and minus it is not possible to use a diode to allow AC to flow in one direction and not in the other direction.
when electrons flow under AC they flow in both direction firstly forward then in reverse and it does this for as long as there is a potential difference applied to the circuit. under DC the current only flows in one direction only
That is called "DC" or "direct current".
The primary difference between DC and AC is the direction of current flow. In a DC circuit, all electron current flow is in one direction. In an AC circuit, current flows in one direction for part of the time, and in another direction for another part of the time. In the AC circuit, we'll see current flowing "back and forth" instead of the unidirectional current flow we find in a DC circuit.DC is "Direct Current", and AC is "Alternating Current". In DC, the current flow is in one direction only. In AC, the current flow is constantly changing direction.An example of DC is the output of a battery. An example of AC is the power present in a home electrical system.The current whose magnitude and direction remains change called as alternating current.The current whose magnitude and direction remain unchanged called as d.c. Current.