Assignment:
Question 1. The inner and outer surfaces of a cell membrane carry a negative and positive charge, respectively. Because of these charges, a potential difference of about 0.065 V exists across the membrane. The thickness of the membrane is 8.9 x 10-9 m. What is the magnitude of the electric field in the membrane?
Question 2. The potential at location A is 626 V. A positively charged particle is released there from rest and arrives at location B with a speed vB. The potential at location C is 1060 V, and when released from rest from this spot, the particle arrives at B with twice the speed it previously had, or 2 vB. Find the potential at B.