Consider a wire of length 4m and cross-sectional areal `1 mm^(2)` carrying of 2A. If each cubic
Channel: Doubtnut
Date: 2020-07-05

Consider a wire of length 4m and cross-sectional areal `1 mm^(2)` carrying of 2A. If each cubic metre of the material contains `10^(29)`free electrons, find the average time taken by an electron to cross the length of the wire.