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An electron in a television picture tube...

An electron in a television picture tube travels at `3xx10^(7)` m/s. It is subjected to a transverse magnetic field of `2xx10^(-3)Wb//m^(2).` What is the magnitude of the lateral foce acting on the electron, due to the action of the magnetic field ?
Charge on the electron `=-1.6 xx10^(-19) C.`

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