Q.
1.5 A current is flowing through a metallic wire. If it flows for 3 hrs, how many electrons would flow through the wire?
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a
205×1022 electrons
b
1.0×1023 electrons
c
1024 electrons
d
4.5×1023 electrons
answer is B.
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Detailed Solution
We know that Charge,q=It=1.5×3×60×60=16200C∵ Charge on one electron =1.6×10−19C∴ 16200C chargeison 1×162001.6×10−19=1.0×1023 electrons
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