Q7. A parallel-plate capacitor is charged to a potential difference V. After disconnecting the charging battery the distance between the plates of the capacitor is increased by 0.4 cm. Then you measured the voltage between the plates and found that it increases by 100 V. If the parallel plates have an area of 500 cm? (a) What is the charge Q on the positive plate of the capacitor? (b) How much does the energy stored in the capacitor increase due to the movement of the plates?

Q7. A parallel-plate capacitor is charged to a potential difference V. After disconnecting the charging battery the distance between the plates of the capacitor is increased by 0.4 cm. Then you measured the voltage between the plates and found that it increases by 100 V. If the parallel plates have an area of 500 cm? (a) What is the charge Q on the positive plate of the capacitor? (b) How much does the energy stored in the capacitor increase due to the movement of the plates?

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter27: Capacitors And Batteries

Section: Chapter Questions

Problem 24PQ: An arrangement of capacitors is shown in Figure P27.23. a. If C = 9.70 105 F, what is the...

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