Two wires are made having same length l and area of cross-section A. Wire 1 is made of copper and wire 2 is made of aluminium. It is given that the electrical conductivity of copper is more than that of aluminium. In this context, which one of the following statements is correct?
[amp_mcq option1=”The resistance of wire 1 will be higher than that of wire 2.” option2=”The resistance of wire 2 will be higher than that of wire 1.” option3=”The resistance of both the wires will be the same.” option4=”If same current is flown through both the wires, the power dissipated in both the wires will be the same.” correct=”option2″]
This question was previously asked in
UPSC CDS-2 – 2017