Question

calculate the electric current if 1.25×10^19 electrons flows across any cross section of a conductor in 5 sec​

Answer 1

Given ; no. of electrons = 1.25 ×10 ^ 19

time of fow of charge = 5 seconds

as we know , one coulomb of charge = 6 × 10^18 electrons

then, charge on conductor = 1.25 × 10 ^ 19 / 6 × 10 ^ 18

Q = 3 coulomb ( approx .)

by using,. I = Q/T

I = 3 /5

= .6 AMPERES OF ELECTRIC CURRENT

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