1. Two point charges q, = +26µC and q2 = -17.5µC are 64 cm apart.a. What is the potential energy of the system of two charges?b. What is the electric potential at a point between them 24 cm from q,?2. Three point charges q, = +2.7µC, q2 = -3.4µC and q3 = -1.6µC initially are infinitely far apart. They are thenbrought together and placed at the corners of an equilateral triangle. Each side has a length of 40 cm.Determine the total electric potential energy of these group of charges.3. Two point charges q, = 2.2nC and q2= -1.5nC are 13 cm apart. Point A is midway between the charges andpoint B is 12 cm from q, and 5 cm from q2. Calculate:a. the electric potential at point A and at point Bb. the work done by the electric field on a charge of q3 = +3.6nC that moves from A to B4. A certain amount of excess charge is transferred a conducting sphere with a diameter of 30 cm such thatthe electric potential at the center of the sphere is equal to 2.5 kV.a. How much charge was transferred to the conducting sphere?b. Determine the electric potential at a point outside of the sphere with a distance of 5 cm from its surface.c. Determine the charge density of the sphere. (Hint: surface or volume?)5. At a corner of a 30 mm x 40 mm rectangle is placed a charge of-40µC and at the two adjacent corners are charges of +20µC, asshown in the figure. Determine:a. The potential at the 4th corner P.b. The potential at the center of the rectangle.The work that must be done by an external force to bring acharge q, = +5µC from the center of the rectangle to the 4th91 = +20 µC92 = -40 µCB30 mmС.40 mmcorner P.93 = +20 µC

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1. Two point charges q, = +26µC and q2 = -17.5µC are 64 cm apart. a. What is the potential energy of the system of two charges? b. What is the electric potential at a point between them 24 cm from q,?

1. Two point charges q, = +26µC and q2 = -17.5µC are 64 cm apart. a. What is the potential energy of the system of two charges? b. What is the electric potential at a point between them 24 cm from q,?

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter16: Electrical Energy And Capacitance

Section: Chapter Questions

Problem 18P: A positive point charge q = +2.50 nC is located at x = 1.20 m and a negative charge of 2q = 5.00 nC...

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