A -2 ?C charge is located at the origin and -2 ?C charge is located at the x-axi
ID: 2285779 • Letter: A
Question
A -2 ?C charge is located at the origin and -2 ?C charge is located at the x-axis at x = +10 cm (careful, both the source charges are now negative). Assume the positive x-direction points to the right. Draw a sketch of your coordinate system and the position of the two source charges first and then answer the following: (remember that the choice of your coordinate system determines the sign of the electric field vector)
The net electric field at the point x = +60.0 cm is ____________ [N/C] (+x).
Is this answer 162319?? I have no idea it is right or not.... Please explain..... the right answer......
Explanation / Answer
Enet = E1 + E2
= k*q1/x1^2 + k*q2/x2^2
= k*q*(1/x1^2 + 1/x2^2)
= 9*10^9*2*10^-6*(1/0.5^2 + 1/0.6^2)
= 112000 N/C towards -x axis
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