what redesign of the plates or perhaps extra electrodes could help eliminate the
ID: 1600683 • Letter: W
Question
what redesign of the plates or perhaps extra electrodes could help eliminate the fringing effect? DC, Source Electrodes Connecting wires Figure 13.5: Parallel Plate Capacitor Plot the equipotential and the electric field lines. 1. What is the field outside the capacitor plates? 2. How does the ratio of the plate length (l) versus separation (d) affect the fringing effect at the edges of the plates? 3. What redesign of the plates, or perhaps extra electrodes, could help eliminate the fringing effect?Explanation / Answer
3.
Fringing effect is bending of electric field lines(outside the volume between plates) at edges which is uniform and parallel inside the capacitor .
This effect can be elliminated by
a). Encircling the electrode with guard electrodes.They help in eleminating this effect by creating sharp edges i.e. higher charge densities at edges.
b) By maitaning the spacing between electodes much smaller than width and length of electrodes
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