A student is trying to build a home-made capacitor. He uses two 1.0 cm x 1.0 cm aluminum foil as the two parallel conducting plates, spaced 0.40 cm apart. He then connects the two foils with a 3.0 V battery. [Answer in 2 significant figures] a) How many electrons are stored in the negative plate? b) To increase the capacitance, he places a stack of paper (K = 3.6) in between the space and able to decrease the space between the two foils from 0.40 cm to 1.0 mm with the battery still connected. What is the change in energy of the capacitor?
A student is trying to build a home-made capacitor. He uses two 1.0 cm x 1.0 cm aluminum foil as the two parallel conducting plates, spaced 0.40 cm apart. He then connects the two foils with a 3.0 V battery. [Answer in 2 significant figures] a) How many electrons are stored in the negative plate? b) To increase the capacitance, he places a stack of paper (K = 3.6) in between the space and able to decrease the space between the two foils from 0.40 cm to 1.0 mm with the battery still connected. What is the change in energy of the capacitor?
Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter20: Electric Potential And Capacitance
Section: Chapter Questions
Problem 37P
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