Errors in measuring equipotential lines with a conducting sheet

[bes001]

if i am finding the equipotential lines by using a conducting sheet, power supply, and muiltimeter to find the voltage, what types of errors can be present while experimenting? could there be areas of no-flow or disappearing lines?

thanks

 

[Claude Bile]

Non-zero conductivity of the sheet, human error in positioning the probe, the uncertainty in the multimeter reading, deviations in the electrode shape w.r.t. the ideal shape are some of the more obvious sources of error (or uncertainty).

Also, shouldn't the sheet by non-conducting? Otherwise you would measure 0 V everywhere.

Claude.