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What is the charge mass its ratio e...

What is the charge mass its ratio electron ?

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Charge (e ) = 1.6022 `xx 10^(19) C`
mass `m_(e ) = 9 .10939 xx 10^(31) kg`
the ratio of charge and mass
`=(e )/( m_(e )) = 1.758820 xx 10^(11) C kg ^(-1)`
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