An electron having energy 10 eV is circu...

An electron having energy `10 eV` is circulating in path of radius `0.1m` having magnetic field `1.0xx10^(-4)` Tesla, the speed of the electron will be

`1.9xx10^(6)m//s`

`1.9xx10^(12)m//s`

`3.8xx10^(6)m//s`

`3.8xx10^(12)m//s`

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