A -14 nC charge is located at (x, y) = (1.1 cm , 0 cm). Part A : What is the x -

Question

A -14 nC charge is located at (x, y) = (1.1 cm , 0 cm).

Part A : What is the x-component of the electric field at the position (x, y) = (4.8 cm , 0 cm)?

Part B: What is the y-component of the electric field at the position (x, y) = (4.8 cm , 0 cm)?

Part C: What is the x-component of the electric field at the position (x, y) = (4.8cm, 0 cm)?

Part D: What is the y-component of the electric field at the position (x, y) = (4.8cm, 0 cm)?

Part E:What is the x-component of the electric field at the position (x, y) = (0 cm, 4.8 cm )?

Part F: What is the y-component of the electric field at the position (x, y) = (0 cm, 4.8 cm )?

Explanation / Answer

electric field due to a point charge E = k*q/r^2

part(a)

Ex = -k*q/r^2 = -9*10^9*14*10^-9/(0.048-0.011)^2 = -92038 N/C

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part(b)

Ey = 0 N/C

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part(c)

Ex = k*q/r^2 = 9*10^9*14*10^-9/(0.048+0.011)^2 = +36196.5N/C

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part (d)

Ey = 0 N/C

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part E

Ex = k*q*x/r^3 = 9*10^9*14*10^-9*0.011/(0.048+0.011)^3 = 6748.5 N/C

part(F)

Ey = -k*q*y/r^3 = -9*10^9*14*10^-9*0.048/(0.048+0.011)^3 = -29448 N/C

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