Teaching UP B.Ed (Paper 1 & 2) Mock Test 2025 Physics Current, Resistance and Electricity Resistance and Resistivity
If the length and radius of a wire are doubled, then
1
the resistance is doubled and the electric resistivity is halved
2
the resistance is halved and electric resistivity remains the same
3
the resistance is halved and the electric resistivity is doubled
4
the resistance is doubled and the electric resistivity remains the same