Electricity
Alternating current:In alternating
current (AC, also ac), the flow of electric
charge periodically reverses direction. In direct current (DC, also
dc), the flow of electric charge is only in one direction. The
abbreviations AC and DC are often used to mean simply
alternating and direct, as when they modify current or voltage.
current (AC, also ac), the flow of electric
charge periodically reverses direction. In direct current (DC, also
dc), the flow of electric charge is only in one direction. The
abbreviations AC and DC are often used to mean simply
alternating and direct, as when they modify current or voltage.
diode: In electronics, a diode is a two-terminal electronic component with asymmetric conductance;
it has low (ideally zero) resistance to current in one direction, and high (ideally infinite) resistance in the other.
it has low (ideally zero) resistance to current in one direction, and high (ideally infinite) resistance in the other.