Consider a point midway between the two large charged plates in Fig. 16.27. Comp

Question

Consider a point midway between the two large charged plates in Fig. 16.27. Compute the change in electric potential if from there you moved (a) 1.0 mm toward the positive plate, (b) 1.0 mm toward the negative plate, and (c) 1.0 mm parallel to the plates

Two large parallel plates are separated by 3.0 cm and connected to a 12-V battery. Starting at the negative plate and moving 1.0 cm toward the positive plate at a 45 degree angle (Fig. 16.27), (a) what value of potential would be reached, assuming the negative plate were defined as zero potential? (b) Repeat part (a) except move 1 0 cm direct toward the positive plate. Explain why your answer to (a) and (b) are different, (c) After the movement in (b) suppose you moved 0.50 cm parallel to the plane of the plates. What would be the electric potential value then? FIGURE 16.27 Reaching our potential See Exercises 32 and 33.

Explanation / Answer

halfway in between V = 6 V

dV = 6*0.1/3 = 0.2 V

b) now -0.2 V

c) parallel no change so dV = 0

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