Cov capacitors sib luag - teeb meem thiab kev daws teeb meem

1. A lub capacitor parallel-plate muaj thawj zaug muaj peev xwm C, qhov permittivity ntawm qhov chaw dawb is ε_o, thaj chaw phaj is A, qhov kev ncua deb ntawm cov phaj is d. Yog tiase thaj tsam ntawm daim phaj nce 4 zaug, qhov deb ntawm cov phaj ua 2d thiab qhov permittivity ntawm free space yog 5ε_o, qhov peev xwm kawg ntawm lub capacitor parallel-plate yog dab tsi.

Paub:

Lub peev xwm ntawm lub capacitor = C

Qhov permittivity ntawm qhov chaw dawb = ε _o

P thaj chaw lig = A

Qhov nrug ntawm cov phaj = d

Tom ntej: Capacitor Muaj Peev Xwm (C)

Tshuaj:

[irp]

2. Lub capacitor uas muaj peev xwm loj tshaj plaws raws li daim duab hauv qab no yog ...

Tshuaj:

Cov mis ntawm lub capacitor parallel-plate:

Lub peev xwm ntawm cov capacitors:

Lub capacitor uas muaj lub peev xwm y loj tshaj plaws yog capacitor C3_.

[irp]

3.

Xav txog cov yam hauv qab no!
(1) Dielectric tas mus li
(2) Tus qhov sib txawv ntawm qhov muaj peev xwm nruab nrab ntawm cov phaj
(3) Phaj thick
(4) Qhov chaw ntawm lub phaj
(5) Qhov deb ntawm cov phaj
(6) Tus nqi ntawm hluav taws xob
Cov yam tseem ceeb uas cuam tshuam rau lub peev xwm ntawm cov phaj sib luag cov capacitors yog…

Tshuaj:

(1), (4) thiab (5)

4. Qhov sib piv ntawm lub peev xwm ntawm lub capacitor 1 thiab 2 yog ...

Paub:

Lub Capacitor 1:

Thaj chaw nto = 2A

Qhov nrug ntawm cov phaj = d ₁

Lub Capacitor 2:

Thaj chaw nto = A

Qhov nrug ntawm cov phaj = 2 d ₁

Xav tau: Kev sib piv ntawm lub peev xwm ntawm cov capacitors 1 thiab 2

Tshuaj:

[irp]

5.

Txheeb xyuas qhov sib piv ntawm lub peev xwm ntawm Parallel-plate capacitor I thiab II.

Tshuaj:

Kev sib piv ntawm lub peev xwm ntawm Parallel-plate capacitors I thiab II:

[irp]

6. Ob lub capacitors parallel-plate uas tau qhia hauv daim duab hauv qab no.

Yog tias A ₁ = ½ A ₂ thiab d ₂ = 3 d ₁ ces txiav txim siab qhov piv ntawm cov peev xwm ntawm lub capacitor parallel-plate ntawm daim duab 2 thiab daim duab 1.

Paub:

Lub capacitor parallel-plate I:

A1 = ₁

d1 = ₁

Lub capacitor phaj sib luag II:

A2 = ₂

d2 = ₃

Xav tau: qhov piv ntawm cov peev xwm ntawm lub capacitor parallel-plate ntawm daim duab 2 thiab daim duab 1

Tshuaj:

Lub capacitor parallel-plate I:

Lub capacitor phaj sib luag II:

Qhov piv ntawm cov peev xwm ntawm cov capacitors parallel-plate II thiab I: