A current of 6mA is passing through a wire. How many electrons are passing in 15 min through cross section of wire
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we know that q=It, where q represents coulomb, I is the current and t is the time period.
then 1mA=10³A.
so, q=6000×15/60=15×10².coulombs.
also we know that q=n.e,where n and e are the no. of electrons and the charge of an electron.
so n=q/e=15×10²/1.6×10(-19)[power of -19]
=>n=9.3×10²¹ electrons.
then 1mA=10³A.
so, q=6000×15/60=15×10².coulombs.
also we know that q=n.e,where n and e are the no. of electrons and the charge of an electron.
so n=q/e=15×10²/1.6×10(-19)[power of -19]
=>n=9.3×10²¹ electrons.
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