Question

WileyPLUS: My WileyPLUS I Help Contact Us Log Out Cutnell, Physics, 11e INTRO TO PHYSICS (PHYS 207/208) Assignment Gradebook ORION Downloadable eTextbook FULL SCREEN PRINTER VERSION BACK NEXT Test Bank, Question 69 Two positive charges are located at points A and B as shown in the figure. The distance from each charge to the point P is a 2.0 m A +3.0°C 430 Suppose that the charges are rearranged as shown in this figure, Which one of the following statements is true for this new arrangement? OB The electric field will remain unchanged, but the electric potential will decrease Both the electric field and the electric potential are vero at P. The electric field will remain unchanged, but the electric potential will be zero. Both the electric field and the electric potential will be changed and will be non-zero. The electric field will be rero, but the electric potential remains unchanged. 2000-2019 John Wiley Sons, Inc. All Rights Reserved. A Division of John Wie Sons, Inc. vacy Polx I

Answer 1

Sol:

Electric field is a vector quantity so it will change with change in direction in the second setting the electric field produced by charges at point A and B cancel out since they are equal in magnitude and opposite in direction.

Electric potential is a scalar quantity it can only be changed by changing the charge or distance between the charge and the point since distance remain same in second setting as that of first, hence potential remain same.

So the answer is, the electric field will be zero put electric potential remain unchanged.