Lecture 2 Applied Physics Bs Electrical

Lecture by : Hamyun khan

Written By : Saif Ullah

Alternating current (AC) :-

                                                                       Alternating Current is the flow of charge that revers its direction periodically is known as Alternating current.AC current is operating on 50 to 60 hz frequency depending on Country.

According to Wikipedia:- Alternating current (AC), the flow of electric charge periodically reverses direction.

For Example : Wapda Supply 

Character wave Form Of AC :-

Ac has Four Wave Form

1. Sinusoidal wave 

    

       2.  Square Wave

                                    

     3.  Triangle wave

    4.  Complex wave

==>>>>>>>>Note  Ac will always have complex shape

                                            

Direct Current (DC) :-

                                                        Direct Current is the flow of charge that does not chant its Direction (unidirectional) is know as Direct Current.

According to Wikipedia :- Direct current (DC) is the unidirectional flow of Electric Charge.

Dc has not frequency