CBSE Class 12 Physics 2019 Outside Delhi Set 1 Paper

Question : 6

Total: 27

SECTION -B

A capacitor made of two parallel plates, each of area ' A ' and separation ' d ' is charged by an external dc source. Show that during charging, the displacement current inside the capacitor is the same as the current charging the capacitor.

Solution:

For writing expression for total current
For showing that displacement current is the same as the current charging the capacitor
i=ic+id
where, ic is conduction current and id is displacement current.
Outside the capacitor id=0 so i=ic‌‌
Inside the capacitor ic=0 so i=id‌‌

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