1. TimerEvaluate Feedback Print a i> A parallel plate capacitor with plate separation d is connected
to a battery. The capacitor is fully charged t? Coulombs and a voltage of V. (C is the capacitance
and Uis the stored energy.) Answer the following questions regarding the capacitor charged by a
battery. För each statement below, select True or False. course contents Hw #2 (05/31 Th
11:59PM ) . Capacitor concepts B Faise After being disconnected from the battery, inserting a
dielectric with k will decrease C. True After being disconnected from the battery, inserting a
dielectric with ? will increase U. Faise With the capacitor connected to the battery, increasing d
increases C Fase After being disconnected from the battery, decreasing d increases U aise With
the capacitor connected to the battery, increasing d decreases Q. true o After being disconnected
from the battery, inserting a dielectric with k will decrease V ???? ??. Tries 1/20?????
Solution
1) False. Capacitance will increase to ?C.
2) True. U = CV²/2 so energy will increase to ?U because capacitance will increase to ?C (V
remains constant).
3) False
4) False. U = Q²/2C and C = ?A/d. C increases linearly with decrease in d, and U decreases
linearly with increase in C, therefore U decreases linearly with decrease in d.
5) True
6) True. V will decrease. The dielectric sets up a back EMF which partially cancels V.