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# Exam 1_11 - Name College Physics Exam 1 Concept Questions...

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College Physics – Exam 1 Concept Questions: Place the answer in the blank next to the number. Only the answer in the blank will be graded. (3 points each). 1) The direction of the electric field halfway between an electron and a proton is _____________________. A) directed toward the proton B) directed toward the electron C) perpendicular to the line from the electron to the proton D) perpendicular to the line from the proton to the electron 2) A positive point charge induces a charge on a neutral rod. What is the net charge on the rod? 3) For an electron moving in a direction opposite to the electric field ________________. 4) Why are equipotential surfaces always perpendicular to the electric field vectors? A) If the electric field is not perpendicular to an equipotential, then the field would do work on a charge that moves along the equipotential. B) If the electric field is not perpendicular to the equipotential, then the charge can not flow from positive to negative.

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