True or False Which statements are true for two oppositely charged, isolatedpara

Question

True or False

Which statements are true for two oppositely charged, isolatedparallel plates: C=capacitance, U=stored energy (Q and -Q = chargeon the plates). Note: Isolated plates can not lose theircharge.

__When the distance is doubled, C increases.
__Inserting a dielectric increases Q.
__Inserting a dielectric decreases U.
__Inserting a dielectric increases C.
__When the distance is doubled, U increases.
__Increasing the distance increases the Electric field.
__When the distance is halved, Q stays the same.

Explanation / Answer

1, false 2,false 3,true 4,true 5,true (U=1/2*Q2/C ...d increase --> C decreased--> U increased 6,false 7,true (Q is constant as given)

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