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How many electrons pass through a lamp i...

How many electrons pass through a lamp in one minute, if the current is 300 mA ?

Text Solution

Verified by Experts

`I=300mA=300xx10^(-3)A`
`t="1 minute"=60s`
`e=1.6xx10^(-19)C`
`I=(q)/(t)=("ne")/(t)`
`n=(It)/(e)=(300xx10^(-3)xx60)/(1.6xx10^(-19))=1.125xx10^(20)`
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