Question

can someone tell me why when the length of a wire increase, the current decreases??

and why is it that, as the length of the wire increase, so too does the resistance..so y isn't the current the same increasing as the forumla

V=IR shows that there is a proportional relationship between all quantities??

Answer 1

Current depends on voltage, and resistance. Resistance depends on the type of metal, the size (crosssectional area), and the length.

R= metalconstant*Length/area

So, if lenght increases, resistance goes up, and current then (V/R) decreases.