18. Electric Field of Point Charges in a Plane

18 Electric Field - Electric Field of Point Charges in Plane(1 Determine magnitude of E1 and E1 and identify directions in plane E1 = k|q1 | k|q2 |

Info iconThis preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Electric Field of Point Charges in Plane (1) Determine magnitude of E1 and E1 and identify directions in plane: E1 = k|q1 | k|q2 | = 7.99N/C, E2 = = 4.32N/C. (3m)2 (5m)2 E E1 E2 3 2 1 q = +8nC 1 Determine x- and y-components of E1 and E1 and of the resultant field E: x E1 = 0, y E1 = 7.99N/C; y E2 x E2 = -3.46N/C, = 2.59N/C; Ex = -3.46N/C, Ey = 10.6N/C. q =+12nC 2 x Determine magnitude and direction of E: q 2 2 E = Ex + Ey = 11.2N/C, = arctan ,, Ey Ex = 108 . 0 1 2 3 4 [m] 11/1/2008 [tsl18 1/5 Electric Field of Point Charges in Plane (2) 1m E (a) Find the electric charge q2 . + q = 3nC 1 45 o 1m q2 = ? E =? (b) Find the angle . 1m q1 = 2nC 1m q2 = 4nC 11/1/2008 [tsl20 2/5 Electric Field of Point Charges in Plane (3) Two point charges, one known and the other unknown, produce a horizontal electric field as shown. What is the value of the unknown charge? E 5m 5m q=? 1nC 11/1/2008 [tsl21 3/5 Electric Field of Point Charges in Plane (4) Consider four triangles with point charges of equal magnitude at two of the three corners. (1) a a a (2) a a a (3) a a (4) a a (a) Determine the direction of the electric field Ei at the third corner of triangle (i). (b) Rank the fields Ei according to strength. 11/1/2008 [tsl326 4/5 Electric Field of Point Charges in Plane (5) Find magnitude and direction of the resultant electric field at point P . k|q1 | = 3.38 N/C. 8m2 k|q2 | = 6.75 N/C. E1 = 8m2 k|q3 | E1 = = 3.38 N/C. 2 8m Ex = E1 cos 45 + E2 cos 45 = 4.78 N/C. E1 = Ey = E2 = 6.75 N/C. q 2 2 E = Ex + Ey = 8.27 N/C. tan = Ey = 1.41. Ex E2 E1 Ey E E3 2m Ex 2m q 1= +3nC q 2= +3nC 2m q 3= -3nC x = arctan 1.41 = 54.7 . 11/1/2008 [tsl371 5/5 ...
View Full Document

This note was uploaded on 04/30/2008 for the course PHYS 204 taught by Professor Andrevantonder during the Spring '07 term at Rhode Island.

Page1 / 5

18 Electric Field - Electric Field of Point Charges in Plane(1 Determine magnitude of E1 and E1 and identify directions in plane E1 = k|q1 | k|q2 |

This preview shows document pages 1 - 5. Sign up to view the full document.

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