^Velocity selector

Velocity selector

A beam of charged particles is passed in a region of electric & magnetic fields acting at right angles (called cross fields) with such a velocity that the electric & magnetic force balances each other & the beam of charge particles pass undeflected through the region of cross fields. i.e.

Felectric = Fmagnetic   ⇒ qE = Bqv  ⇒


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