A cylindrical capacitor having a length of 130 mm is made of two concentric rings with an inner radius as 3 cm and outer radius as 6 cm. Find the capacitance and the stored energy of the of the capacitor if the positive cylindrical plate has a charge of 2 μC. a. 10.43 pF ; 0.19 J b. 8.23 pF ; 0.24 J c. 5.01 pF ; 0.40 J d. 7.28 pF ; 0.27 J

A cylindrical capacitor having a length of 130 mm is made of two concentric rings with an inner radius as 3 cm and outer radius as 6 cm. Find the capacitance and the stored energy of the of the capacitor if the positive cylindrical plate has a charge of 2 μC. a. 10.43 pF ; 0.19 J b. 8.23 pF ; 0.24 J c. 5.01 pF ; 0.40 J d. 7.28 pF ; 0.27 J

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 5PP: Three capacitors having capacitance values of 20F,40F, and 50F are connected in parallel to a 60 -...

See similar textbooks

Similar questions

A capacitor uses air as a dielectric and has a capacitance of 3 F. A dielectric material is inserted between the plates without changing the spacing, and the capacitance becomes 15 F. What is the dielectric constant of this material?
Three capacitors having capacitance values of 20F,40F, and 50F are connected in parallel to a 60 - Hz power line. An ammeter indicates a circuit current of 8.6 amperes. How much current is flowing through the 40F capacitor?
A postage stamp mica capacitor has the following color marks starting at the upper left dot: yellow, violet, brown, green, no color, and blue. What are the capacitance value, tolerance, and voltage rating of this capacitor?
4. In what form is the energy of a capacitor stored?
Suppose a capacitor is made using square plates that are 5.1 cm on a side, and are separated by 5.2 mm. If a dielectric is inserted between the plates as well, with a dielectric constant of 8.7, what is the capacitance of the capacitor? Enter your answer in pF (10-12 F) to two decimal places and without units. Answer:
4.) A parallel plate capacitor has plates 20 mm apart, a plate area of 120 sq.cm. and a dielectric with relative permittivity of 2. Determine the capacitance if the capacitor has a charge of 0.06 μC. Express in nano-farad, five decimal places.
A capacitor is constructed using two metal foil sheets that are 1 cm wide and 1 m long. The insulator between them is 1 mm thick and has a dielectric constant of 12. Determine the resulting capacitance. Enter your answer in nF rounded to two decimal places.
A capacitor is formed using two concentric copper cylinders 120 cm long and separated by a material with a dielectric constant of 3.6. The inner and outer cylinders have radii of 2.4 cm and 4.8 cm respectively. Determine the resulting capacitance and draw the diagram .
A spherical capacitor have an inner radius of 38.5 mm and an outer radius of 41.6 mm. If we want to replace it with a parallel plate capacitor of the same capacitance and seperation distance, what should the area of each plate be? A) 223.2 cm² B) 219.5 cm² 215.8 cm² D) 212.1 cm² E 208.5 cm² F 204.9 cm² G) 201.3 cm² H) 197.7 cm² None of the above.
A parallel-plate capacitor has plates of area 124.0 cm² and a separation of 1.00 cm. A battery charges the plates to a potential difference of 121.0 Vand is then disconnected. A dielectric slab of thickness 4.60 mm and dielectric constant 6.40 is then placed symmetrically between the plates. Find the capacitance before the slab is inserted. 1.098
A capacitor shown below has a plate area of 7.89cm2 and a separation distance of 4.62mm. There are two different materials use in between the plates and this time they are stacked one on top of the other, like layers. The layers have the same thickness. The one on the top has a dielectric constant of 11. The material on the bottom has a dielectric constant of 12. What is the overall capacitance of the capacitor?
In the box below, show that the time constant r is the time it takes the voltage across a discharging capacitor to reach the value V0/e.