CHAPTER 17: ELECTRIC CHARGE AND ELECTRIC FIELD A positive point charge is in an
ID: 1884776 • Letter: C
Question
CHAPTER 17: ELECTRIC CHARGE AND ELECTRIC FIELD A positive point charge is in an electric field created by a negative point charge. Which of the following is true? A. The field points toward the negative charge, and the force on the positivecharge is in the same direction as the field. B. The field points toward the negative charge, and the force on the positive charge is in the opposite direction to the field. C.The field points away from the negative charge, and the force on the positive charge is in the same direction as the field. D. The field points away from the negative charge, and the force on the positive charge is in the opposite direction to the field. 2. A small object with a charge of magnitude q creates an electric field. At a point 1.0 m to the south of the charge the field has a value of 3.0N/C. At a point 0.5 m to the east of the charge the field has a value of A. 9.0 N/C directed east. B. 9.0 N/C directed west. C. 12.0 N/C directed east. D. 12.0 N/C directed west. E. 27.0 N/C directed west 3. Point P in the figure is equidistant from two negative point charges Q of equal magnitude. If charge is placed at P without moving the original charges, the net electrical a positive point force the charges Q will exert on it is -00 A. directly upward. B. zero C. directly downward. D. directly to the right. E. directly to the left. -00Explanation / Answer
1.
Option (a) is correct
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2.
Electric field is directly proportional to the square of distance between charge and at required point,
So E2/E1= (r1/r2)^2
E2/3= (1/0.5)^2
E2= 12 N/C
Directed to the west
Option (d) is correct
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3.
Option (E) is correct
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Comment in case any doubt... Good luck