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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