Teaching UP TGT Mock Test Series 2025 Physics Current, Resistance and Electricity Drift of Electrons and the Origin of Resistivity
The drift velocity of electrons in a current-carrying wire of cross-sectional area A and current I is v. If the electric current and the cross-sectional area is doubled then-new drift velocity will-
1
become 2 times
2
become 4 times
3
become half
4
remain same