Derive the capacitance of a spherical capacitor with inner sphere of radius a and outer sphere of radius b (b> a)
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Q: QUESTION 4 Find the equivalent capacitance in pF for the dielectric capacitor in problem 25.48 using…
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Q: Find the equivalent capacitance in pF for the dielectric capacitor of problem 25.49 using values of…
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Q: A certain substance has a dielectric constant of 2.8 and a dielectric strength of 18.0 MV/m. If it…
A: Write the given values with the suitable variables. k=2.8E=18 MV/m=18×106 V/mC=9×10-8 FV=4.8…
Q: Consider an isolated charged parallel plate capacitor with charge stored Q, plate surface area axb,…
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Q: A certain substance has a dielectric constant of 3.8 and a dielectric strength of 25 MV/m. If it is…
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- An air-filled spherical capacitor is constructed with an inner-shell radius of 7.40 cm and an outer-shell radius of 15.8 cm. (a) Calculate the capacitance of the device. (b) What potential difference between the spheres results in a 4.00 µC charge on the capacitor? (c) What If? What would be the length (in cm) of a cylindrical air-filled capacitor with the same inner and outer radii as the spherical capacitor if it were to have the same capacitance as the spherical capacitor?An air-filled spherical capacitor is constructed with an inner-shell radius of 7.40 cm and an outer-shell radius of 13.0 cm. (a) Calculate the capacitance of the device. (b) What potential difference between the spheres results in a 4.00 µC charge on the capacitor? (c) What If? What would be the length (in cm) of a cylindrical air-filled capacitor with the same inner and outer radii as the spherical capacitor if it were to have the same capacitance as the spherical capacitor?Given that q=CV What happens to the capacitance C if the voltage drop V across the capacitor is doubled? Justify your answer.
- A cylindrical capacitor is made of two thin-walled concentric cylinders. The inner cylinder has radius R₂ = 7.5 mm, and the outer one a radius R = 14 mm. The region between the cylinders contains a dielectric with constant =3.6. The common length of the cylinders is L=7.5 m (Assume the cylinders can be treated as ideal infinite cylinders.) Determine the potential energy stored in this capacitor when a potential difference V = 38.8V is applied between the inner and outer cylinders in n.J. ME hpConsider a solid cylindrical conductor of inner conductor radius 61 cm and outer conductor radius 84 cm with charge Q that is coaxial with a cylindrical shell of negligible thickness. Find the capacitance, in nF, of this cylindrical capacitor if its length is 74 m and the insulator used is mica (εr = 6).Why is the capacitance of a parallel plate capacitor inversely pro- portional to their separation distance d? (A) The capacitance does not depend on the charge. (B) The charging process depends on the applied voltage. (C) The voltage across the capacitor is proportional to the charge per unit area of the plates. (D) The voltage across the capacitor is proportional to d. (E) The time constant is inversely proportional to the plate separation distance.