Cov txheej txheem:
Video: Koj nrhiav tau tus nqi tam sim no li cas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2024-01-18 08:15
Hluav taws xob tam sim no thiab cov pa hluav taws xob tam sim no
- Tam sim no hluav taws xob yog hais txog kev txav mus los raug nqi cov khoom.
- Tam sim no yog tus nqi ntws ntawm nqi ; nws yog tus nqi ntawm nqi ntws ib thib ob los ntawm tus neeg xyuas pib.
- Qhov sib npaug rau xam tam sim no yog:
- kuv = tam sim no (amps, A)
- Q = nqi ntws dhau ib qho taw tes hauv Circuit Court (coulombs, C)
Ua raws li qhov no hauv kev txiav txim siab, yuav ua li cas koj pom tam sim no nrog voltage thiab nqi?
Koj tuaj yeem siv Ohm txoj cai (V = IR) rau xam tam sim no los ntawm hluav taws xob thiab tsis kam. Rau ib lub voj voog nrog hluav taws xob 3 V thiab tsis kam 5 Ω uas tau thov rau 10 vib nas this, qhov sib xws tam sim no Cov txiaj ntsig yog I = V / R = 3 V / 5 Ω = 0.6 A, thiab tag nrho nqi Luas Q = 0.6 A × 10 s = 6 C.
cov units rau nqi dab tsi? Cov chav them nqi yog Coulombs thiab Ampere – thib ob. Coulomb yog tus qauv ntawm tus nqi. Ib coulomb ntawm tus nqi yog sib npaug rau electrons los yog protons. Ib tug electron yog sib npaug rau Coulombs.
Hauv qhov no, tus qauv ntawm hluav taws xob tam sim no yog dab tsi?
Cov qauv hluav taws xob tam sim no thiab Unit Yog tias tus nqi Q ntws los ntawm ntu ntu ntawm tus neeg xyuas pib hauv lub sijhawm t, lub tam sim no Kuv ces kuv = Q/t. S. I units ntawm tus nqi yog coulomb thiab ntsuas ntawm hluav taws xob tam sim no tshwm sim hauv units ntawm coulomb ib ob uas yog 'ampere'.
Tam sim no ntsuas li cas?
Tam sim no tuaj yeem yog ntsuas siv lub ammeter. Hluav taws xob tam sim no tuaj yeem ncaj qha ntsuas nrog galvanometer, tab sis txoj kev no cuam tshuam nrog kev rhuav tshem cov hluav taws xob hluav taws xob, uas qee zaum tsis yooj yim. Tam sim no tuaj yeem yog ntsuas tsis tawg lub Circuit Court los ntawm kev ntes cov magnetic teb txuam nrog rau tam sim no.
Pom zoo:
Yuav ua li cas koj nrhiav tau tus nqi ntawm ib tug particle?
Nyob rau hauv physics, ib tug nqi particle yog ib tug particle nrog ib tug hluav taws xob nqi. Tej zaum nws yuav yog ib qho ion, xws li cov molecule los yog atom nrog ib qho nyiaj seem lossis tsis txaus ntawm cov electrons txheeb ze rau protons. Nws kuj tuaj yeem yog electron lossis proton, lossis lwm yam khoom siv hauv tsev, uas txhua tus ntseeg tias muaj tib yam nqi (tshwj tsis yog cov tshuaj tiv thaiv)
Yuav ua li cas koj thiaj nrhiav tau tus nqi ntawm tus qauv txhais tau tias?
Qhov xav tau tus nqi ntawm tus qauv txhais tau tias yog cov pej xeem txhais tau tias, thiab SE ntawm tus qauv txhais tau tias yog SD ntawm cov pej xeem, muab faib los ntawm lub hauv paus square ntawm tus qauv loj
Yuav ua li cas koj thiaj nrhiav tau tus nqi ploj ntawm tus nqi tsim?
Tus nqi ntawm ib qho tshuaj tiv thaiv yog qhov kev hloov hauv kev concentration ntawm qhov kev hloov ntawm lub sijhawm. Cov tshuaj tiv thaiv tuaj yeem txhais tau li no: tus nqi ploj ntawm A tus nqi = −Δ [A] Δt. tus nqi ploj ntawm B tus nqi = − Δ [B] Δt. tus nqi tsim ntawm C tus nqi = Δ [C] Δt. tus nqi tsim ntawm D) tus nqi = Δ [D] Δt
Yuav ua li cas koj thiaj nrhiav tau tus nqi siab tshaj plaws ntawm lub quadratic muaj nuj nqi?
Yog tias koj tau txais cov mis y = ax2 + bx + c, ces koj tuaj yeem pom tus nqi siab tshaj plaws uas siv cov mis max = c- (b2 / 4a). Yog tias koj muaj qhov sib npaug y = a (x-h) 2 + k thiab theatrem tsis zoo, ces qhov siab tshaj plaws yog k
Henri Becquerel nrhiav tau dab tsi uas ua rau nws tau txais 1903 Nobel nqi zog Nws nrhiav tau dab tsi txog lub caij uranium?
Teb: Henri Becquerel tau txais ib nrab ntawm qhov khoom plig rau nws qhov kev tshawb pom ntawm cov hluav taws xob tsis zoo. Teb: Marie Curie tau kawm txog cov hluav taws xob ntawm tag nrho cov tebchaw uas muaj cov xov tooj cua paub, suav nrog uranium thiab thorium, uas nws tom qab pom kuj tseem muaj xov tooj cua