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. As shown in the diagram, three positive point charges are arranged to the east, west, and north(1 point) of point a. All three charges have equal magnitude q, and each is at a distance r from point a. What is the magnitude and direction of the electric field at point a? Ok, directed north Ok directed south direated south Ok , directed south 3r2 9r 3q A moving electron enters an electric field. The initial velocity of the electron is in the same direction as the electric field. How will the electric field affect the motion of the electron? (1 point) OThe electron will accelerate in the opposite direction of its motion. OThe electron will accelerate in the same direction as its motion. OThe electrons speed will remain constant as it changes direction. OThe electrons speed will increase as it changes direction.

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2. Electvic field duet chaspi , El= Electyic field due to chasg 2, E Etectvic id due to Chas 3 chaste i , cl=_ towards East south tewayds E and wil camcel ot each other, so ‘nly E3 o A ns kt divected south will be n opposite d Yect70n m b Clectyic field so The electyon will acceler ate. n the opposite divection of its ts motiom

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