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Three 3.0 microC charges are at the three corners of an square of side 0.50 m. The last corner is occupied by a -3.0 microC charge. Find the electric field at the center of the square

  • physics -

    Use the principle of superposition. The E field at the center will be the sum of two cases:
    (a) +3 microC at the open corner, and all three other corners
    (b) -6 microC at the open corner location only

    Case (a) results in a net E field at the center of zero. That leaves you with case (b), which is easily solved.

  • physics -

    584km

  • physics -

    The total E is zero

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