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B. Suppose the plates are discharged, then held a distance D apart and connected to a battery. (Ignore the fringing fields near the plate edges.)
1. Write expressions for the following quantities in terms of the given variables. Explain your reasoning in each case.
• the potential difference
• the electric field at points 1,2,3, and 4
• the charge density on each plate
2. The right plate is moved to the left. Describe how each of the following quantities changes (if at all). Explain.
•the potential difference
• the electric field both outside and between the plates
• the charge density on each plate
3. Write expressions for the following quantities in terms of
• the magnitude of the electric field between the plates
• the charge density on each plate
4. Find
How, if at all, would this ratio change if the voltage of the battery was
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