{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

# Capa4 - 1[1 point 10 tries Find the capacitance of the...

This preview shows pages 1–2. Sign up to view the full content.

1 . [1 point, 10 tries] Find the capacitance of the Earth. Take the mean radius of the Earth to be 6.37×10 6 m. (The outer conductor of the "spherical capacitor" may be considered as a conducting sphere at infinity where V approaches zero.) Answer: 7.09e-04 F 7 2 . [1 point, 10 tries] Regarding the Earth and a cloud layer 927 m above the Earth as the "plates" of a capacitor, calculate the capacitance if the cloud layer has an area of 1.27 km 2 . Assume that the air between the cloud and the ground is pure and dry. Assume that charge builds up on the cloud and on the ground until a uniform electric field with a magnitude of 3.39×10 6 N/C throughout the space between them makes the air break down and conduct electricity as a lightning bolt. What is the maximum charge the cloud can hold? Answer: 3.81e+01 C 7 3 . [1 point, 10 tries] Two capacitors when connected in parallel give an equivalent capacitance of 9.76 pF and an equivalent capacitance of 1.48 pF when connected in series. What is the capacitance of each capacitor? Enter the smaller value first.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ 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