F s B = × I

6.1 F = I B B =1,µ0I22πR∆F = I∆s×BS N = Fa sinθ = IBab sinθ = IBS sinθ6.1∆F = I∆s×B6.26.2 ∆sF = eEI=env∆ F = I∆ s×B = Nev∆ s×B = N∆s⋅ev×BeF = eE+ev×B

dvm edt = v × B 2v m evBr =v0eBω0= =r mmv r =eBr =mveB6.3 6.61 2mB =34πzqmB = 1 az >> a22224πrµ0Iaµ0Ia1 2µ 0IπaBz ()=≅ =2 2z + a3 33222z4πzc h s z z>>sLB q mqm s s qsmm=Om = µ0IS1 1−LFIz − s z + s z z z z zNMQP ≅ HG + K J F I− −NM HG K JO1 144 QP = 24= 1 22 2 2 3 3π π π 4πe 2j e 2jS = πa2 m=qms m=qms

N = IBSsinθ = µ ISHsinθ = mHsinθ = q sHsinθ0m m= µ0IS = qmsF = qEH N= FssinθF = q mΗ 6.7F = q mHB = µ 0HH Q m H B Q m1= =2µ 4πµr0 01 qQmF = qmH=2πµ r40m