• Part A A parallel-plate capacitor is constructed from two 15 cm x 15 cm electrodes spaced 1.5 mm apart. The capacitor plates are charged to + 20 nC, then disconnected from the battery. How much energy is stored in the capacitor? Express your answer using two significant figures. U = Value Units Submit Reguest Answer • Part B Insulating handles are used to pull the capacitor plates apart until the spacing is 2.8 mm. Now how much energy is stored in the capacitor? Express your answer using two significant figures. ? Uz = Value Units Submit Request Answer • Part C Energy must be conserved. How do you account for the difference between A and B? O Work was done to pull the plates apart. O The electric field supplied addtional energy. O Kinetic energy of the charges was transformed into potential energy. O The battery supplied additional energy Submit Resuest Answer
• Part A A parallel-plate capacitor is constructed from two 15 cm x 15 cm electrodes spaced 1.5 mm apart. The capacitor plates are charged to + 20 nC, then disconnected from the battery. How much energy is stored in the capacitor? Express your answer using two significant figures. U = Value Units Submit Reguest Answer • Part B Insulating handles are used to pull the capacitor plates apart until the spacing is 2.8 mm. Now how much energy is stored in the capacitor? Express your answer using two significant figures. ? Uz = Value Units Submit Request Answer • Part C Energy must be conserved. How do you account for the difference between A and B? O Work was done to pull the plates apart. O The electric field supplied addtional energy. O Kinetic energy of the charges was transformed into potential energy. O The battery supplied additional energy Submit Resuest Answer
Chapter8: Capacitance
Section: Chapter Questions
Problem 62P: When a 360-nF air capacitor is connected to a power supply, the energy stored in the capacitor is...
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