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

Question

Which statements are true for two oppositely charged, isolated parallel plates: C=capacitance, U=stored energy (Q and -Q = charge on the plates). Note: Isolated plates can not lose their charge.

True False  When the distance is doubled, C increases.
True False  Inserting a dielectric decreases U.
True False  Inserting a dielectric increases Q.
True False  Increasing the distance increases the Electric field.
True False  When the distance is doubled, U increases.
True False  When the distance is halved, Q stays the same.
True False  Inserting a dielectric increases C.

Explanation / Answer

When the distance is halved, Q stays the same. TRUE

Inserting a dielectric decreases U. True [lowers potential difference]

Inserting a dielectric increases Q. False

When the distance is doubled, U increases. True; you would have to use energy to pull the plates apart

Increasing the distance increases the Electric field. False

Inserting a dielectric increases C. True

When the distance is doubled, C increases. False

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.