Using the usual mathematical definition of the slope, and writing \(V\) for the height in order to remind us of the electrical analogy, the slope along such a line is \(dV/dx\) (the rise over the run)...Using the usual mathematical definition of the slope, and writing \(V\) for the height in order to remind us of the electrical analogy, the slope along such a line is \(dV/dx\) (the rise over the run). Determine the positive and negative signs of \(dV/dx\) and \(dV/dy\), and relate these to the direction of the force that is pushing the current forward against the resistance of friction. (b) If you wanted to find a lot of electric charge on this map, where would you look?
