Question

Problem 22.63 11 of 11 Review Part A what is the electric field at point 1 in (Figure 1)? Give your answer in component form Assume that a = 3 0 cm and b = 4.0 cm Enter the and y components of the electric field separated by a comma. Figure < 1of1 N/C Submit X Incorrect; Try Again; 4 attempts remaining -10 nC Part B

Answer 1

a = 2 cm = 3 times 10^-2 m b = 4 cm = 4 times 10^-2 m E_1x = 0 E_1y = 1/4 pi epsilon_0 /a^2 = 9 times 10^9 times (-10 times 10^-9)/(3 times 10^-2)^2 therefore cos theta = 3/5 = 0.6 sin theta = 4/5 = 0.8 E_1y = -10^5 N/c E_2x = 9 times 10^9 times (-10 times 10^-9)/(5 times 10^-2)^2 times sin theta E_2x = 2.88 times 10^4 N/c E_2y = 9 times 10^9 times (-10 times 10^-9)/(5 times 10^-2)^2 times cos theta E_2y = 2.16 times 10^4 N/c E_3x = 9 times 10^9 times (-10 times 10^-9)/(4 times 10^-2)^2 E_3x = 5.625 times 10^4 N/c & E_3y = 0