Answer questions 1, 2, and 3 based on the figure below. Three positive charges (

Question

Answer questions 1, 2, and 3 based on the figure below. Three positive charges (qi = q,-q,-+25 pC) are located at the vertices of an equilateral triangle of sides s = 0.020 m. 1. Sketch the electric forces F21, F31 and the resultant F acting on q . 0.020 m 0.020m 42 43 2. What is the magnitude and direction of the electric field, E, at the location indicated by the star (which is 0.020 m from either qi and q2 and 0.055 m from q3) due to all three charges? Vector x component y component E3 Er, Ey Ex | E-Ex2 + ET2 = 1.05 x 109 N/C | = tan-i(E/E,) = 900 (/2) | 3. What is the electric potential, V, at the location of the star?

Explanation / Answer

Ans:-

Given data q1=q2=q3 =25C

r1=0.020m, r2= 0.020m, r3= 0.055m

V= vi = v1 + v2 + v3

V = KQ/r

V = 9*10^9 (q1/r1 +q2/r2 + q3/r3 )

= 9*10^9 (25*10^-6/0.020 + 25*10^-6/0.020 + 25*10^-6/0.055)

= 9*10^9( 1.25*10^-3 +1.25*10^-3 + 4.55*10^-4)

V =26.59*10^6V

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