平板电容器内填充两层简单媒质，外加电压U，如下图所示，若介电常数[img=53x19]1802fb3ba42e144.png[/img],电导率[img=48x19]1802fb3bad3797a.png[/img],则在两种媒质的分界面上 （ ）[img=227x203]1802fb3bb76ae26.png[/img]
A: [img=171x23]1802fb3bbee3703.png[/img]
B: [img=181x23]1802fb3bc7ddb4f.png[/img]
C: [img=181x23]1802fb3bd0c910d.png[/img]
D: [img=171x23]1802fb3bd9bfdc7.png[/img]
A: [img=171x23]1802fb3bbee3703.png[/img]
B: [img=181x23]1802fb3bc7ddb4f.png[/img]
C: [img=181x23]1802fb3bd0c910d.png[/img]
D: [img=171x23]1802fb3bd9bfdc7.png[/img]
举一反三
- 图中的力F对O点的矩为多少？[img=744x149]18036e09021933f.png[/img][img=685x233]18036e090d730fc.png[/img][img=735x315]18036e0919b7d9d.png[/img] A: 0，Fl, Fb B: Fl, Fb,0 C: Fb,Fl,0 D: Fl,Fb,0
- 图中的力F对O点的矩为多少？[img=744x149]18036264958edca.png[/img][img=685x233]18036264a0a5ed0.png[/img][img=735x315]18036264ac698ce.png[/img] A: 0，Fl, Fb B: Fl, Fb,0 C: Fb,Fl,0 D: Fl,Fb,0
- 图中的力F对O点的矩为多少？[img=744x149]1802f3fa5d08ce2.png[/img][img=685x233]1802f3fa67fe3e8.png[/img][img=735x315]1802f3fa7529558.png[/img] A: 0，Fl, Fb B: Fl, Fb,0 C: Fb,Fl,0 D: Fl,Fb,0
- 图中的力F对O点的矩为多少？[img=744x149]18035d1c6fd7961.png[/img][img=685x233]18035d1c7ab1df4.png[/img][img=735x315]18035d1c859b5d7.png[/img] A: 0，Fl, Fb B: Fl, Fb,0 C: Fb,Fl,0 D: Fl,Fb,0
- 图中的力F对O点的矩为多少？[img=744x149]1802f3f8b9285a5.png[/img][img=685x233]1802f3f8c4edd9d.png[/img][img=735x315]1802f3f8d15814b.png[/img] A: 0，Fl, Fb B: Fl, Fb,0 C: Fb,Fl,0 D: Fl,Fb,0