Two 20cm long thin glass rods uniformly charged to 19nc are placed side by side,

Question

Two 20cm long thin glass rods uniformly charged to 19nc are placed side by side, 4.0 cm apart. What are the electric field strengths E1, E2, and E3 at distances 1.0cm , 2.0 cm, and 3.0cm to the right of the rod on the left, along the line connecting the midpoints of the two rods? A. What is electric field strength E1? B. What is electric field strength E2? C. What is electric field strength E3? Two 20cm long thin glass rods uniformly charged to 19nc are placed side by side, 4.0 cm apart. What are the electric field strengths E1, E2, and E3 at distances 1.0cm , 2.0 cm, and 3.0cm to the right of the rod on the left, along the line connecting the midpoints of the two rods? A. What is electric field strength E1? B. What is electric field strength E2? C. What is electric field strength E3?

Explanation / Answer

at 1cm,

E=E1+E2

E=19nC/2 pi *8.85*10^-12 (1/0.01+1/0.03)

E =14.55*10^6 N/C

b.at r=2cm E =341.86 *(1/2 -1/2) =0

c.at r= 3cm E =Â 341.86 (1/0.03+1/0.01)= 4.55*10^6 N/c

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