PHYSICS · Subjective · CBSE · Physics · Current Electricity · Current Electricity
Problem
Four identical wires (same material, same original dimensions) undergo the following separate modifications at constant temperature:
A. Stretched to double their original length keeping volume constant.
B. Forged to double their original cross-sectional area keeping length unchanged.
C. Stretched to triple their original length keeping volume constant.
D. Heated so that their resistivity increases by 10% while dimensions remain unchanged.
Arrange the final resistances of the wires in descending order (largest to smallest) and give qualitative reasons for your ordering without performing detailed numerical calculations.