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Two protons and one electron are placed on three corners of a square. The electron is...

  1. Two protons and one electron are placed on three corners of a square. The electron is opposite the empty corner. Which of the following correctly describes the electric potential at the empty corner?

    At the empty corner the electric potential is zero.

    At the empty corner the electric potential is negative.

    At the empty corner the electric potential is positive.
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