Dab tsi yog qhov txawv ntawm cov roj hmab cov roj hmab thiab cov hlua khau insulating yog dab tsi?
Lub ntsiab qhov txawv yog qhov luaj li cas ntawm qhov resistor:
12th ohms nrog ib qho kev ua haujlwm siab tshaj 10 yog insulated
Qhov tsis kam tshaj 10, lub hwj chim thib 6 yog tsawg tshaj 10, thiab lub hwjchim 12th yog kev tiv thaiv tsis zoo.
Lub cev hluav taws xob: Lub cev hluav taws xob yog ib lub hom phiaj uas muaj tshwm sim rau hauv ntau txoj hau kev, xws li kev sib cuag, kev sib txhuam, thiab kev sib ncaw. Kev siv tiv thaiv electrostatic, kev lag luam hauv tshuab hluav taws xob, cov khoom siv hluav taws xob, kev lag luam roj hmab, kev lag luam riam phom, kev lag luam textile, kev lag luam roj hmab, thiab hluav taws xob hauv cov av av thiab cov tub rog, nrhiav kev txo kom tsis txhob ua rau hluav taws xob.
Insulator: Rwb thaiv tsev yog ib qho kev txheeb ze. Nws tseem yog ntawv. Nws tuaj yeem nkag mus rau hauv tus neeg xyuas pib hauv kev kub siab, tab sis nws yog ib qho insulator uas tsis tshua muaj hluav taws xob. Yog hais tias nws ntsib dej, nws ua tus neeg xyuas pib. Hom insulators yog cov xuab zeb, roj hmab, ntaub ntaub qhuav, ntoo qhuav. Cov khoom yas, cua, dej ntshiab, iav, ua cov roj pleev cov roj, bakelite, kua qaub, thiab polyvinyl chloride yog cov insulators.
Kev rwb thaiv tsis tau txhais hais tias yog tiv thaiv kom tsis txhob muaj teeb meem, thiab cov insulator kuj tuaj yeem xa tau electrostatically. Qhov tseeb, tiv thaiv tsis tau hluav taws xob. Qhov tiag tiag yuav tsum raug hu ua hluav taws xob zoo li qub. Cov khoom siv los tiv thaiv zoo li dub vim tias nws muaj cov khoom hluav taws xob nyob nruab nrab ntawm, uas tuaj yeem tso tawm hluav taws xob thaum nws yog qhov tsawg kawg nkaus. Raws li yog vim li cas nws tsis siv hlau, nws yog vim hais tias lub cev nqaij daim tawv tsis muaj zog. Piv txwv, piv txwv, yog tias kuv xav kom cov hnab looj qog los tiv thaiv, ces nws tsis tuaj yeem muab kuv hlau, uas yog tsis txaus. Txawm li cas los, nyob rau qee qhov chaw, cov hlau tseem siv tsawg, thiab nws tsis tshua muaj.
Ib yam khoom uas tsis zoo rau kev ua tam sim no hu ua insulator, thiab ib qho insulator tseem hu ua dielectric. Lawv cov hluav taws xob resistivity yog siab heev. Kev txhais ntawm insulator: Ib yam khoom uas tsis yoojyim ua yog hu ua insulator. Nws tsis muaj kev txwv rau cov insulators thiab cov neeg sib tw. Cov insulator yuav tau hloov mus rau ib tus neeg xyuas pib hauv tej yam mob. Qhov no them sai sai: yog vim li cas rau txoj kev xa tshuaj: seb muaj kua los yog kua, yog tias muaj electrons los yog ions hauv lub zog dawb, ces nws tuaj yeem ua hluav taws xob. Yog tsis muaj nqi dawb, thiab nyob rau qee qhov xwm txheej, cov khoom siv yuav ua tau, ces nws kuj yog tus neeg xyuas pib.