PHYSICS · Single correct · CBSE · Physics · Current Electricity · Current Electricity
Problem
Two identical metallic wires, X and Y, are connected in separate circuits. Wire X is kept in an ice bath so its temperature stays nearly constant, whereas wire Y is allowed to heat up while current flows. Which statement about their V–I characteristics is correct?
(a) Both X and Y will show straight lines passing through the origin
(b) X will show a straight line through the origin, while Y will show a curve bending downward
(c) X will show a straight line through the origin, while Y will show a curve bending upward
(d) X will show a curve bending upward, while Y will show a straight line through the origin