Why are the measured equipotentials given by lines instead of surfaces in this l

Question

Why are the measured equipotentials given by lines instead of surfaces in this laboratory? Because the electrodes are flat. Because we are measuring on a 2-D slice of a 3-D volume. They aren't. The potentials we will determine are surfaces. Because the Earth is flat. If two electrodes have a source of potential difference of 90 V connected to them, how many equipotential surfaces exist in the space between them? Eight. There will be 900 of them, one every 0.1 V. There will be 90 of them, because we will measure one every 1 V. An infinite number. Why is it important to center the electrodes on the resistance paper for this laboratory? The carbon of the resistive paper is more uniform near the center. So any distortion of the field lines near the edge of the paper is the same on each side. There is no physical reason to do this, it just makes the device look more realistic. To eliminate distortion of the field lines near the edge of the paper. In the performance of this laboratory, what is the recommended maximum allowed potential difference from one end of an electrode to its other end? 0 5V. 0.2 V. 1 V. 20 V. On what basis are you to decide how many points to measure for each equipotential for a given electrode configuration? We are supposed to follow the directions of the lab instructor. Enough so we can draw a smooth curve. Every 0.5 cm, so there is no margin of error. Every 1 cm, using the grid on the paper.

Explanation / Answer

6 - d

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