A capacitor is made up of two concentric spherical conducting shells separated by vacuum. The inner sphere has a radius of 12.5 cm, and the outer sphere has a radius of 14.8 cm. A potential difference of 120 V is applied to the capacitor. a) What is the capacitance of the capacitor?: C=______pF. b) What is the charge stored in the capacitor? : Q=______nC. c) What is the energy stored in the capacitor?: U=______µJ. d) If the gap between the two shells is filled with a dielectric of constant k=25, what is the new capacitance of the capacitor?: C=______nF.

University Physics Volume 2
18th Edition
ISBN:9781938168161
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Chapter8: Capacitance
Section: Chapter Questions
Problem 77CP: A spherical capacitor is formed from two concentric spherical conducting spheres separated by...
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A capacitor is made up of two concentric spherical conducting shells separated by vacuum. The inner sphere has a radius of 12.5 cm, and the outer sphere has a radius of 14.8 cm. A potential difference of 120 V is applied to the capacitor.

a) What is the capacitance of the capacitor?: C=______pF.

b) What is the charge stored in the capacitor? : Q=______nC.

c) What is the energy stored in the capacitor?: U=______µJ.

d) If the gap between the two shells is filled with a dielectric of constant k=25, what is the new capacitance of the capacitor?: C=______nF.

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