1. A 20 µF capacitor has a potential difference of 9.0 V applied across its plates. If the potential difference across its plates is increased to 12.0 V, how much ADDITIONAL energy does the capacitor store? 2. Each plate of a parallel-plate air-filled capacitor has an area of 0.0020 m2, and the separation of the plates is 0.020 mm. An electric field of 3.9x106 V/m is present between the plates. What is the surface charge density on the plates? HINT: E = (where E = electric field, V = Potential difference/Voltage, and d= distance between plates) Also note that 1 N/C = 1 V/m. (V/m is just another unit for electric field) 3. Thirteen resistors are connected across points A and B as shown in the figure. If all the resistors are accurate to 2 significant figures, what is the equivalent resistance between points A and B? 20 20 wwwww 20 20 wwwww ww-

1. A 20 µF capacitor has a potential difference of 9.0 V applied across its plates. If the potential difference across its plates is increased to 12.0 V, how much ADDITIONAL energy does the capacitor store? 2. Each plate of a parallel-plate air-filled capacitor has an area of 0.0020 m2, and the separation of the plates is 0.020 mm. An electric field of 3.9x106 V/m is present between the plates. What is the surface charge density on the plates? HINT: E = (where E = electric field, V = Potential difference/Voltage, and d= distance between plates) Also note that 1 N/C = 1 V/m. (V/m is just another unit for electric field) 3. Thirteen resistors are connected across points A and B as shown in the figure. If all the resistors are accurate to 2 significant figures, what is the equivalent resistance between points A and B? 20 20 wwwww 20 20 wwwww ww-

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter20: Capacitance In Ac Circuits

Section: Chapter Questions

Problem 2PA: You are working in an industrial plant. You have been instructed to double the capacitance connected...

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