current electricity

Asked by tangocharliee | 4th Nov, 2009, 07:41: PM

Expert Answer:

Total momentum of electrons = (no of electrons)(mass of an electron)(velocity)

    = (no of electrons)(mass of an electron)(Length)/time

   =NmL/t         ..............(1)

I = 70 A = 70 C/s = Ne/t C/s,

N/t = I/e = 70/1.602x10-19; m = 9.11x10-31 kg; L = 1000 m,

Using these in (1),

Total momentum of electrons = 40 x 10-8 kg.m/s

Regards,

Team,

TopperLearning.

Answered by  | 5th Nov, 2009, 01:40: PM

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