# TimerEvaluate Feedback Print a i- A parallel plate capacitor with plat.docx

4 Feb 2023
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### TimerEvaluate Feedback Print a i- A parallel plate capacitor with plat.docx

• 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. FÃ¶r 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 = CVÂ²/2 so energy will increase to ?U because capacitance will increase to ?C (V remains constant). 3) False 4) False. U = QÂ²/2C 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.