Question

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?

Answer 1

 

According to ohm’s law, V = IR Resistance of conductor, R = \(\frac{V}{I}\)

Graph-I: 

Conductor A, I = 4 A and 

V = 2V

Conductor F has least resistance, R_F = 0.4 Ω,

Conductor C has maximum resistance, R_C = 2.5G.