1.

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

Answer»

Solution :Data: I=0.5 amp, `t=2 xx 60 xx 60 =7200 Q =It `
96500 Couloumbs `to 6.022 X 10^(23) e^(-)s""=0.5 xx 2 xx 60 xx 60`
`3600 Coulombus to ? ""=3600 C`
`=(6.022 xx 10^(23) xx 3600)/(96500) =0.224 xx 10^(23) e^(-)s`.


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