Hi there, Im new to here, and I bring some questions here too, hope can be solved here~ (1)if one loop that essentially has a current by power supply, meanwhile it is experienced a induced current too, then what's the resultant current? add them or what? (2)as you know, Inductance L = somesomething/I, does it depend on I, well, obviously yes if we judge from the formular, but one text book said it doesn't depend on I, so just wanna ensure this. (3)an extra question...hehe...be patient plz... as we know, one function of inductor is that it can give a protection while the current suddenly changed, why? Cheers guys!