If a current of 0.5 ampere flows through a metallic wire for 2 hours, then how many electrons would flow through the wire ?

Explanation

I = 0.5 ampere
`t=2xx60xx60`
=7200 sec
Q =It
`=0.5xx7200`
=3600 C
96500 C =1 mole of e
or 96500 C `=6.022xx10^(23)`
`3600C=(6.022xx10^(23))/(96500)xx3600`
`=(6.022xx360)/(965)xx10^(22)`
`=2.25xx10^(22)` electrons.