PHYSICS · Single correct · CBSE · Physics · Current Electricity · Current Electricity
Problem
While plotting the V–I graph for a metal wire, the wire becomes hot at higher currents. How will this heating affect the slope of the graph?
(a) The slope decreases, making the line flatter.
(b) The slope remains practically the same; heating does not affect it.
(c) The slope increases, making the line steeper.
(d) The graph becomes curved due to heating, so a single slope cannot be assigned.