Teaching UP TGT Mock Test Series 2025 Physics Current, Resistance and Electricity Resistance and Resistivity
A conducting wire of uniform diameter was made from a piece of copper. If l and d are taken as the symbols of length and diameter of the wire respectively then for which l and d given below the resistance of the wire would be minimum?
1
l, d
2
2l, d
3
l/2, 2d
4
2l , d/2