This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: Physics 9HD, Midterm 1, October 26, 2009 You are permitted to use one 8 /1/2 x 11 sheet of paper with formulas. You will not need your calculator. MAXIMUM SCORE IS 100 POINTS . SHOW ALL WORK FOR PARTIAL CREDIT. Useful formulas: In spherical coordinates, for spherical symmetry, r r r = ) r ) , , ( , and = r r r r r 2 2 2 1 ) , , ( 1. Fill in the blanks. (a) (1 point)The direction of the electric field is defined as the direction that a _____________________ test charge would move. (b). (4 points) If a point charge moves at constant velocity x v v o = r into a region of constant electric field, z E E o = r , the path of the charge will be a ________________________________. How would the path change if the sign of the charge were to be reversed?__________________________________________ 2. (20 pts) Consider a coaxial cable, which has a solid inner conductor of radius a, an outer cylindrical conducting shell of radius b, and a length L, where L>>b,a.. conducting shell of radius b, and a length L, where L>>b,a....
View Full Document