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1) What's the potential at point C for situation (a)? Each dot has a charge of -3. 2) What's the potential at point C for situation (b)? 3) Is the E-field at point C equal to zero for situation (a)? If so, explain why. If not, is it pointing to the left or right? 4) Is the E-field at point C equal to zero for situation (b)? If so, explain why. If not, is it pointing to the left or right?

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