1 2 12 x 10 5 m s 3 1 56 x 10 5 m s 2 0 78 x 10 5 m s 4 none

Last updated: 6/7/2023

1 2 12 x 10 5 m s 3 1 56 x 10 5 m s 2 0 78 x 10 5 m s 4 none of these There is a current of 40 amperes in a wire of 106 m area of cross section If the number of free electrons per m is 1029 then the drift velocity will be 1 1 25 x 10 m s 2 2 50 10 m s 3 25 0 x 10 m s 4 250 x 10 m s S I unit of current is 1 C