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Electric Field Calculations for Stationary Charges and a Dipole at Point P(0,4m)
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[QUOTE="BHH, post: 5344374, member: 543738"] [h2]Homework Statement [/h2] The picture below shows two stationary charges q1= +2mC and q2= -15 mC. and I need to find the electric field vector at field point P(0,4m). [B]E[/B]= [px, py] . Also A little dipole is positions in P(0,4m) and is given with [B]p[/B]= [px,py]=[2*10^-8 ,0] Cm. Find the torque that acts on the dipole because of the electric field and its potential energy [h2]Homework Equations[/h2] E=k*q/r^2 [h2]The Attempt at a Solution[/h2] I have found out that E1=4.5*10[6][/SUP] and E2= 1.7*10^6. I am not sure if the electric field E1 is negative or positive ? I think its negative because the vector goes downwards. And when I find the angle for E2 do I use arctan(8/2)? [/QUOTE]
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Electric Field Calculations for Stationary Charges and a Dipole at Point P(0,4m)
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