physics HW #3 - Physics 112 HW #3 April 16, 2010 1. The...

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Physics 112 HW #3 April 16, 2010 1. The drawing shows four point charges. The value of q is 2.07 µC, and the distance d is 1.03 m. Find the total potential at the location P . Assume that the potential of a point charge is zero at infinity. V 2. Identical +3.21 µC charges are fixed to adjacent corners of a square. What charge (magnitude and algebraic sign) should be fixed to one of the empty corners, so that the total electric potential at the remaining empty corner is 0 V? C 3. The inner and outer surfaces of a cell membrane carry a negative and a positive charge, respectively. Because of these charges, a potential difference of about 0.078 V exists across the membrane. The thickness of the cell membrane is 7.40 10 -9 m. What is the magnitude of the electric field in the membrane? V/m
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Physics 112 HW #3 April 16, 2010 4. The drawing shows a uniform electric field that points in the negative y direction; the magnitude of the field is 1770 N/C. Determine the electric potential difference the following
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physics HW #3 - Physics 112 HW #3 April 16, 2010 1. The...

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