Formula rau electron ceev?

2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38

Nyob rau hauv ob qho tib si lub zog sib npaug F=qvB thiab lub vojvoog kab zauv r=mv/qB, v yog hais txog qhov nrawm ntawm electron.

Koj suav li cas qhov nrawm ntawm lub tshuab hluav taws xob?

Kev nrawm ntawm electrons

1. Qhov loj ntawm cov electron yog m=9 × 10 ^{-31 kg.}
2. Tus nqi hluav taws xob yog e=1.6 × 10 ^{-19 C.}
3. Rau ib rab phom electron nrog qhov voltage ntawm nws cathode thiab anode ntawm V=100V lub electron yuav muaj qhov ceev ntawm v=6 × 10 ^{6 m / s. (Txoj kev cuam tshuam tsis tau raug coj mus rau hauv tus account.)}

electron tshaj tawm yog dab tsi?

Hauv physics, qhov nrawm nrawm yog qhov nruab nrab tshaj tawm los ntawm cov khoom siv hluav taws xob, xws li electrons, hauv cov khoom vim muaj hluav taws xob. Feem ntau, ib tug electron nyob rau hauv ib tug conductor yuav propagate random ntawm lub Fermi tshaj tawm, ua rau ib tug nruab nrab tshaj tawm ntawm xoom.

Ntau npaum li cas ntawm electron ceev?

Ib qho hluav taws xob taug kev ntawm qhov nrawm ntawm kwv yees 1 cm/sec. Qhov no yog ceev npaum li tus ntsaum scurries rau hauv av.

Dab tsi yog qhov ceev ntawm hluav taws xob ib ob?

Lub zog no taug kev raws li hluav taws xob nthwv dej ntawm qhov ceev ntawm lub teeb, uas yog 670, 616, 629 mais ib teev, 1 lossis 300 lab meters ib ob.