24. if a current of 0.5 ampere flow through a metallic wire for two hours, then how many electrons flow through the wire
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Given :
Current (I)=0.5A
Time taken (t)=2hrs=2×60×60=7200s
Electrons (E)=?
Sol :
I=Q/t
Q=It
Q=0.5×7200
Q=3600C
1C=6.25×10^18E
3600C=3600×6.25×10^18E
E=2.25×10^22
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