Ch 23: The Electric Field
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Problem 23.19
You’ve hung two very large sheets of plastic facing each other with distance d between them, as shown in FIGURE EX23.19. By rubbing them with wool and silk, you’ve managed to give one sheet a uniform surface charge density η1=−η0 and the other a uniform surface charge density η2=+3η0 . What are the electric field vectors at points 1, 2, and 3? <IMAGE>
Problem 24.1
FIGURE EX24.1 shows two cross sections of two infinitely long coaxial cylinders. The inner cylinder has a positive charge, the outer cylinder has an equal negative charge. Draw this figure on your paper, then draw electric field vectors showing the shape of the electric field. <IMAGE>