A straight conductor of uniform cross-section carries a current `I`. Let `s=` specific charge of an electron. The momentum of all the free electrons per unit length of the conductor, due to their drift velocity only, isA. i.sB. `sqrt(i)//(s)`C. i/sD. `(i/s)^(2)`

A straight conductor of uniform cross-section carries a current `I`. L

1.	A straight conductor of uniform cross-section carries a current `I`. Let `s=` specific charge of an electron. The momentum of all the free electrons per unit length of the conductor, due to their drift velocity only, isA. i.sB. `sqrt(i)//(s)`C. i/sD. `(i/s)^(2)`
Answer» Correct Answer - C Current flowing in a straight conductor `i="nAev"_(d)` or `v_(d)=(i)/("nAe")` Total number of free electrons in the unit length of conductor, `N = nA xx l = nA xx 1` (length, l = 1m). Total linear momentum of all the free electrons per unit length `= N_(m)v_(d)=nAm xx (i)/("nAe")=(i0)/((e//m))=(i)/(s)` where, s is charge per unit mass (e/m).

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A straight conductor of uniform cross-section carries a current `I`. Let `s=` specific charge of an electron. The momentum of all the free electrons per unit length of the conductor, due to their drift velocity only, isA. i.sB. `sqrt(i)//(s)`C. i/sD. `(i/s)^(2)`

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