Ap Eapcet
Current Electricity
AP EAPCET 2022 - 4th July Evening Shift
MCQ+1 / -02022
The electrons take \(40 \times 10^3\) s to dirift from one end of a metal wire of length 2 m to its other end. The area of cross-section of the wire is \(4 \mathrm{~mm}^2\) and it is carrying a current of 1.6 A. The number density of free electrons in the metal wire is