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The power lines are at a high potential relative to the ground, so there is an electric field between the power lines and the ground. To maximize the potential difference between one end of the fluorescent tube and the other, how should the tube be held? Select the best answer from the choices provided. A. The tube should be held horizontally, parallel to the ground. B. The potential difference between the ends of the tube does not depend on the tube's orientation. C. The tube should be held vertically, perpendicular to the ground.
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