The aim of this research was to design a simple experimental device to see electric field force
lines using common components which are readily available in everyday life. A solution of baby oil
was placed in a plastic container, 4.5 × 4.5 × 1 inches, with both ends of the electrodes (metal
wire) immersed in the solution at a depth of 0.2 inches. A mosquito racket was used as a source of
voltage, and was connected to the electrodes. Electric field lines were seen through grass seeds,
which were sown in the solution of baby oil. The results showed the design tool successfully evokes
the lines of force of an electric field from a charge point, two point charges, and two dielectric
plates with two polar opposite charges.