The following graphs represent the current versus voltage and voltage versus current for the six conductors A,B,C,D,E and F. Which conductor has least resistance and which has maximum resistance?

Explanation

Resistance `R = V/I`
For the conductor
`F = V_f = 2V`
`I_f = 5A`
`:." Resistance R"_f = V_f /I_f = 2/5 = 0.4 Omega`
For the conductor ` C, V_c = 5V`
For the conductor ` C, I_c = 2A`
Resistance `R_c = V_c/I_c = 5/2 = 2.5 Omega`
Least resistance `R_f = 0.4 Omega`
Maximum resistance `R_c = 2.5 Omega`