CH 16 HW 4 F2008

CH 16 HW 4 F2008 - CH 16 HW 4 F2008 10/30/08 11:38 PM...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
10/30/08 11:38 PM CH 16 HW 4 F2008 Page 1 of 5 http://www.webassign.net/v4cgiknbaker@ncsu/student.pl?z=20081031033835knbaker@ncsu152720237 CH 16 HW 4 F2008 (Homework) BAKER KRISTINE NICOLE PY 208M, section 004, Fall 2008 Instructor: Laura I. Clarke Web Assign Current Score: 19 out of 29 Due: Friday, September 26, 2008 12:30 PM EDT Description Potential at a location; potential differences in regions with varying fields; potential and field inside an insulator The due date for this assignment is past. Your work can be viewed below, but no changes can be made. 1. 4/4 points A highly charged piece of metal (with uniform potential throughout) tends to spark at places where the radius of curvature is small, or at places where there are sharp points. The breakdown electric field strength for air is about 3 10 6 V/m. (a) What is the maximum possible potential of a metal sphere of 14 cm radius in air? (That is, what is the potential at the surface of the sphere, relative to infinity?) 420000 4.20e+05 volts (b) What is the maximum possible potential of a metal sphere of only 0.8 mm radius? 2400 2400 volts Solution or Explanation At the surface of the sphere, E = 3e6 V/m. Solve for q, then find V at the surface of the sphere. 2. 8/8 points
Background image of page 1

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

View Full DocumentRight Arrow Icon
10/30/08 11:38 PM CH 16 HW 4 F2008 Page 2 of 5 http://www.webassign.net/v4cgiknbaker@ncsu/student.pl?z=20081031033835knbaker@ncsu152720237 Figure 16.70
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 5

CH 16 HW 4 F2008 - CH 16 HW 4 F2008 10/30/08 11:38 PM...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online