A Q L = -12 C charge is placed on the x-axis at x = - 0.1 m. A Q R = 12 C charge
ID: 586237 • Letter: A
Question
A QL = -12 C charge is placed on the x-axis at x = - 0.1 m. A QR = 12 C charge is placed at x = +0.1 m. (for all answers below assume that the unit vector x^ points toward positive x, and y^points towards positive y.).
Part A
What is the x-component of the electric field at x = 0 m and y =0.1 m?
Express your answer using three significant figures.
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Part B
What is the y-component of the electric field at x = 0 m and y =0.1 m?
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Part C
What is the x-component of the electric field at x = 0 m and y = -0.1 m?
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Part D
What is the y-component of the electric field at x = 0 m and y = -0.1 m?
E X= x^N/CExplanation / Answer
r = sqrt(0.1^2+0.1^2) = 0.141 m
ELx = -K*QL*xL/r^3
ELy = -k*QL*y/r^3
ERx = -k*QR*XR/r^3
ERy = +k*QR*y/r^3
Ex =ELx+ERX= (2*9*10^9*12*10^-6*0.1)/0.141^3
partA
Ex = -7705421.73 N/C
partB
Ey = 0
part (C)
ELx = -K*QL*xL/r^3
ELy = +k*QL*y/r^3
ERx = -k*QR*XR/r^3
ERy = -k*QR*y/r^3
Ex =ELx+ERX= (2*9*10^9*12*10^-6*0.1)/0.141^3
part(C)
Ex = -7705421.73 N/C
partD
Ey = 0