# 10 a parallel plate capacitor must store at least 70

• Test Prep
• 2

This preview shows page 2. Sign up to view the full content.

------------------------------------------------------------------------------------------------------------------------------- 10) A parallel-plate capacitor must store at least 7.0 x 10 -5 C at a potential of 12000 V. If the area of each plate is 5.0 x 10 -5 m 2 and separation between the plates is 0.15 mm, can barium titanate with a dielectric constant of 2100 be used for the application a) No b) Can’t say c) Yes Answer: c ------------------------------------------------------------------------------------------------------------------------------- Information: 1) Variation of semiconductor conductivity with temperature: 𝜎 = 𝜎 0 𝑒 −𝐸 𝑔 2𝑘𝑇 where T is in Kelvin a. T(K) = T( o C) + 273 b. Boltzmann constant: k = 8.617 x 10 -5 eV/K c. E g : band gap in eV 2) Magnitude of charge of an electron: |e| = 1.60 x 10 -19 C 3) Avogadro number: N A = 6.02 x 10 23 atoms/mol 4) Capacitance: 𝐶 = 𝜀 𝐴 𝑙 5) Dielectric constant: 𝜀 𝑟 = 𝜀/𝜀 0 a. ε 0 = 8.854 x 10 -12 F/m 6) Resistivity: 𝜌 = 𝑅𝐴 𝑙 7) Power: P = I 2 x R
This is the end of the preview. Sign up to access the rest of the document.
• Spring '14
• Berry,Vikas
• 1 m, Electrical conductivity, 0.30 mm, 0.20 cm, carriers/m-3

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern