Study the V-I graph for four conductors A, B,C and D having resistance RA, RB, RC and RD respectively, and answer the following questions :

a) Which one of these is a best conductor?

b) If all the conductors are of same length and same material, which is the thickest?

c) If all the conductors are of same thickness and of same material which is the longest?

d) If the dimensions of all the conductors are identical, but their materials are different

which one would you use as

i) Resistance wire ii) connecting wire

e) Which one of the following relations is true for these conductors?