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Explain what would happen if in the capa...

Explain what would happen if in the capacitor given in Exercise 8,a 3mm thick mica sheet (of dielectric constant =6) were inserted between the plates.
(a) While the voltage supply remained connected.
(b) after the supply was disconnected.

Text Solution

Verified by Experts

(a) Capacity increases to `C=KC_o`
`=6xx1.77xx10^-11F`
charge increases to
`q^1=C^1V=6xx1.77xx10^-11xx10^2C`
(b) After the supply was disconnected new capacity C
`KC_o=6xx1.77xx10^-11F`
New voltage `V^1=(q)/(C^1)=(1.77xx10^-9)/(6xx1.77xx10^-11)=16.67V`.
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