that all what i did in the lab Map the potential voltage lin

that all what i did in the lab

Map the potential (voltage) lines from 0.5 V to 3.5 V for the three plates. The sketches should have equipotential lines going in increments of 0.5 V. Also include the electric field vectors which are perpendicular to the potential lines. You only need this data table for the Two Parallel Lines. The others are only observational. You need two graphs for the parallel lines only: Voltage (V) (on y- axis) versus distance x (m) (on axis), and Electric Field (N/C) (on y -axis) versus distance x (m) (on x -axis). Include the data table as Describe and interpret what you see in all three plates (parallel lines, two points & point and line) Don\'t just attach your sketches in the lab report without any explanations about them.

Solution

For two parallel lines, the equipotential lines will be evenly placed at the same distance from each other and the value of electric field will be constant and equal to negative of Delta(V)/Delta(x), the direction of electric field though will be opposite as is evident from the negative sign. Now, say the equipotential lines are placed at a distance of p from each other. Then, the table will have values 0, p, 2*p, 3*p, 4*p, 5*p, 6*p, 7*p, 8*p. These can be easily converted into metre by simply dividing the values in the first column by 100. Delta(x) will be constant for the whole column and will be equal to p. E_x will also be constant throughout the column and will be equal to -0.5/p.