Question

Enhanced EOC: Problem 26.4 ConstantsPeriodic Table Part A What are the strength and direction of the electric field at the position indicated by the dot in the figure (Figure 1)? You may want to review (Pages 752- 756) For help with math skills, you may want to review Vector Addition 1 Vector Addition 2 Specify the strength of the electric field. Take r-7 4 cm Express your answer using two significant figures. View Available Hint(s) N/C Submit Part B Specify the direction. Express your answer using two significant figures. Figure 1 of 1 View Available Hint(s) 3,0 nC(+ o below horizontal Submit Provide Feedback -3.0 nC

Answer 1

(a)The direction of electron field is away from positive and towards from negative charge. The electric field into components are, The horizontal components electric field is E cos θ are equal and opposite and hence cancels each other. The vertical components E sin θ are added to each other The net electric field is, 4πε0 r. 3.0x10-9 0.04 (0.074) +(0.074)(0.074) +(0.074) 19.7x 103 NC Therefore the magnitude of the electric field is, 19.7x10 N/C As shown the diagram, the net electric field (2Ecos θ) is along-ve axis which makes an angle 90° below the horizontal.