A particle of mass m and carrying charge -q1 is moving
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For circular motion, magnetic force = centripetal force
qvB = mv²/R → multiply by R/(qvB)
R = mv / qB
Angular momentum = mvR = nh / 2π → plug in for R
m²v² / qB = nh / 2π → multiply by qB/2m
½mv² = nhqB / 4πm ◄ KE at nth level
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