A parallel plate capacitor with plate separation d is connected to a battery. Th

Question

A parallel plate capacitor with plate separation d is connected to a battery. The capacitor is fully charged to Q Coulombs and a voltage of V. (C is the capacitance and U is the stored energy.) Answer the following questions regarding the capacitor charged by a battery. For each statement below, select True or False.

TrueFalse With the capacitor connected to the battery, inserting a dielectric with ? will increase U.
TrueFalse After being disconnected from the battery, increasing d increases V.
TrueFalse With the capacitor connected to the battery, decreasing d increases C.
TrueFalse With the capacitor connected to the battery, inserting a dielectric with ? will decrease C.
TrueFalse With the capacitor connected to the battery, increasing d increases U.
TrueFalse After being disconnected from the battery, inserting a dielectric with ? will increase V.

Explanation / Answer

1.true the C goes up, voltage stays the same, which means energy goes up. U = 1/2cv^2

2. True Increasing d decreases C. Charge stays the same, so by V = Q/C, voltage goes up.

3.false, C goes down, irregardless of voltage

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

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