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Statement of a problem № 2813

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In Fig. 25-2, the potential difference between the metal plates is 40 V. (a) Which plate is at the higher potential? (b) How much work must be done to carry a +3.0 C charge from B to A? From A to B? (c) How do we know that the electric field is in the direction indicated? (d) If the plate separation is 5.0 mm, what is the magnitude of E?

Solution:
In Fig. 25-2, the potential difference between the metal plates is 40 V. (a) Whi

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