Hi guys
there's this question i'd like to share idea about is that the current I through a wire of resistivity P varies with the length L, area of cross-section A and pd V, in accordance with the equation I=VA/PL .
If i want to sketch the graph of i against pd for the equation above, would it be directly proportional from the origin or only proportional which is a straight line but not from the origin. I'm guessing it's directly proportional but not too sure.
thanks for any help