This paper presents the development of a conductive gel that can be used to measure the electrical
potential differences on its surface, and has enough consistency to plot equipotential lines. It has
a gelation time of less than 10?min, and is suitable for implementing learning experiences in a
physics teaching laboratory in a 90?min session. To evaluate the gel, voltage measurements were made
on its surface by applying an alternating electric current with frequencies of 60 and 1000?Hz and an
amplitude of 200?mV using iron steel electrodes with several geometrics. Some equipotential lines
were also identified using a water soluble marker.