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    Rubentheran Posts: 35, Reputation: 1
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    Feb 22, 2011, 08:55 AM
    Electrostatic Force
    Three charges are placed at three corners of a square as shown in Figure 5. Find the electric field strength at point A.

    Given answer is 8.23x10^5 N/C and makes an angle 45 degree below –x-axis.

    I can't get the answer.First I start the formula E=k(q1xq2)/r^2 and x and y component then I don't know how and what formula to use but I got try my best to do this question but I still unable to find solution.Can someone guide me with solution nicely.Thanks in advance
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