Charge of `3.2 xx 10^(-7)` C is obtained by rubbing a place of polythene with flannel. How many electrons are transferred? Is any mass transferred fro
Charge of `3.2 xx 10^(-7)` C is obtained by rubbing a place of polythene with flannel. How many electrons are transferred? Is any mass transferred from flannel to polythene?
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Since polythene has negative charge, electrons are transferred from flannel to polythene.
Number of electrons transferred =`"total charge transferred"/" charge of an electron"`
`=(3.2 xx 10^(-7)) / (1.6 xx 10^(-19))`
`= 2 xx 10^12`
Here some mass is transferred from flannel to polythene.
Mass transferred = number of electrons transferred x mass of an electron
=` 2 xx 10^(12) xx 9.1 xx 10^(-31)`
`= 1.82 xx 10^(-18)` kg.
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