Dab tsi yog qhov sib npaug ntawm kev tswj hwm rau lub capacitor?
Dab tsi yog qhov sib npaug ntawm kev tswj hwm rau lub capacitor?

Video: Dab tsi yog qhov sib npaug ntawm kev tswj hwm rau lub capacitor?

Video: Dab tsi yog qhov sib npaug ntawm kev tswj hwm rau lub capacitor?
Video: Dab ntxwg nyoos yog leej twg ...zaj no zoo heev. 2024, Kaum ib hlis
Anonim

Qhov sib npaug capacitor hais tias kuv = C dv/dt. Kev hloov pauv ntse txhais tau tias dv / dt yuav yog tus nqi loj heev rau lub sijhawm luv luv. Yog tias hluav taws xob kev hloov pauv yog instantaneous qhov sib npaug kwv yees lub mem tes ntawm infinite tam sim no nyob rau hauv xoom lub sij hawm.

Ib yam li ntawd, tib neeg nug, dab tsi yog tus qauv ntawm tam sim no ntawm lub capacitor?

Cov qauv uas xam cov capacitor tam sim no yog kuv = Cdv/dt, qhov twg kuv yog tus tam sim no ntws hla lub capacitor , C yog capacitance ntawm capacitor , thiab dv / dt yog qhov derivative ntawm qhov hluav taws xob thoob plaws capacitor.

Kuj Paub, lub capacitor ua haujlwm li cas? A capacitor yog ua los ntawm ob daim hlau. Nrog cov khoom siv dielectric nyob nruab nrab ntawm daim hlau. Thaum koj siv qhov hluav taws xob dhau ntawm ob daim hlau, ib qho hluav taws xob tau tsim. Thiab qhov no yog qhov uas cov physicists txhais tau tias thaum lawv hais tias "a capacitor ua haujlwm los ntawm kev khaws cia lub zog electrostatically hauv qhov hluav taws xob."

Tib neeg kuj nug, dab tsi yog qhov kev sib raug zoo ntawm tam sim no thiab voltage hauv lub capacitor?

Muab qhov no kev sib raug zoo ntawm voltage thiab tam sim no hauv a capacitor nyob rau hauv cov nqe lus calculus, lub tam sim no ntawm a capacitor yog lub derivative ntawm lub hluav taws xob hla ntawm capacitor nrog rau lub sijhawm. Los yog, hais hauv cov ntsiab lus yooj yim, a capacitor tam sim no yog ncaj qha proportional rau sai npaum li cas hluav taws xob hla nws hloov.

SI unit ntawm capacitance yog dab tsi?

Cov SI unit of capacitance yog tus farad (cim: F), muaj npe tom qab Askiv physicist Michael Faraday. A 1 kev capacitor , thaum them nrog 1 coulomb ntawm hluav taws xob, muaj qhov sib txawv ntawm 1 volt ntawm nws daim hlau. Qhov sib txawv ntawm capacitance hu ua elastance.

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