Which statements are true for two oppositely charged, isolated parallel plates:

Question

Which statements are true for two oppositely charged, isolated parallel plates: Ccapacitance, U-stored energy (Q and -Qcharge on the plates). Note: Isolated plates can not lose their charge. When the distance is doubled, C increases. Increasing the distance increases the Electric field When the distance is doubled, U increases Inserting a dielectric decreases U. When the distance is halved, Q stays the same. Inserting a dielectric increases Q Inserting a dielectric increases C. Submit Answer Tries 0/99

Explanation / Answer

Solution)(1) FALSE. When distance increases C will decrease as C=epsilonA/d

C varies inversely with distance so C decreases as d increases.

(2) FALSE. When distance increases E decreases as E=V/d

(3) TRUE. When distance is doubled U increases.

(4)TRUE. Inserting a dielectric decreases U as it is U/K here K is dielectric.

(5)TRUE. When distance is halved Q remains same.

(6)FALSE. Inserting a dielectric increases Q

(7) TRUE . Inserting a dielectric increases C as it is KC.

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