Skssknowledge

-: Electric Current  1. electric current  (i) -: We know that electric potential ofa body is defined as the degree of electrification and it determines the directios of flow of charge. Consider two bodies 'A' and 'B' charged to potentials 'V1'and 'V2' , respectively,  such that V1 > V2 .  -: If they are not connected to each other  (fig.1 ), no charge flows and hence their potentials remain constant.  (Fig.1) -:If they are connected by means of good conducter R, positive charge flows from higher potential to the lower potential or negative charge,  i.e., electrons move from lower potential to higher potential till the potentials become equal. This is an instantaneous process . Current strength,  in a conducter,  is defined as the rate of flow of charge across any cross-section of the conducter.  If a charge 'q' flows across any cross-section in 't' second,  current i is given by -:  i = q/t The above formula holds good if th...