A student investigates how electric current through a metallic conductor kept at…
PHYSICS · Multi-part · CBSE · Physics · Current Electricity · Current Electricity
Problem
A student investigates how electric current through a metallic conductor kept at constant temperature changes when the potential difference across it is altered.
(i) Define electric resistance.
(ii) Explain qualitatively why tripling the potential difference across such a conductor is expected to triple the current through it.
(iii) Sketch the expected graph between potential difference and current for this conductor and state the nature of the curve.