A particle passes undeflected through a selector with electric field E and magnetic field B₁, then enters an analyzer field B₂ perpendicular to its velocity. What is the analyzer radius?
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A particle passes undeflected through a selector with electric field E and magnetic field B₁, then enters an analyzer field B₂ perpendicular to its velocity. What is the analyzer radius?

G1 Physics · Accepted Answer

The selector fixes v=E/B₁. The analyzer radius is mv/(|q|B₂), giving r=mE/(|q|B₁B₂).