Ib lub phaj sib npaug ntawm cov phaj phaj A thiab phaj sib cais d yog them rau qhov sib txawv V thiab tom qab ntawd lub roj teeb raug txiav. Ib lub slab ntawm dielectric tas li K yog ces muab tso rau ntawm daim hlau ntawm capacitor thiaj li mus sau qhov chaw ntawm daim hlau.
Dab tsi yog thaj tsam ntawm lub phaj sib npaug ntawm lub tshuab hluav taws xob?
Txhawm rau xam thaj tsam ntawm daim phiaj ntawm ib qho farad parallel phaj capacitor, peb muaj kev sib cais ntawm daim hlau yog $1mm$ thiab ${varepsilon _0}=8.854 \times {10^{ - 12}}F{m^{ - 1}}$. Raws li muaj lub tshuab nqus tsev ntawm ob daim hlau $k=1$.
Yuav ua li cas rau qhov capacitance ntawm parallel phaj capacitor yog tias thaj tsam ntawm daim hlau yog ob npaug thiab sib cais ntawm daim hlau yog halved?
Yuav ua li cas yog tias thaj chaw thiab kev sib cais ntawm cov phaj sib txuas ua ke tau muab faib ua ob npaug? Yog hais tias lub cheeb tsam yog doubled nrog rau lwm yam tsis tas li, lub capacitance yuav ob npaug. Yog hais tias qhov kev ncua deb ntawm kev sib cais tau muab ob npaug nrog rau lwm tus tas li, ces lub peev xwm yuav raug halved.
Dab tsi yog qhov quab yuam ntawm cov phiaj ntawm cov phaj sib npaug ntawm cov phaj sib txuas ntawm phaj A thiab cov nqi khaws cia Q '?
In a parallel-phaj capacitor ntawm phaj cheeb tsam A, phaj sib cais d thiab them Q, lub zog ntawm kev nyiam ntawm daim hlau yog F.
Yuav ua li cas rau qhov capacitance ntawm lub phaj sib npaug ntawm cov kab hluav taws xob yog tias thaj tsam ntawm daim hlau nce?
and, rauib tug parallel-phaj capacitor, nce thaj tsam ntawm txhua phaj. Lub capacitance… Capacitance yog proportional rau cheeb tsam, yog li nce cheeb tsam nce capacitance.
