Ike is conducting a scientific experiment involving clear adhesive tape.

He completes each of the following steps:He removes two strips of tape from the roll. He presses each strip of tape, sticky-side down, on a plastic surface. He quickly removes each strip of tape from the plastic surface. Ike's teacher tells him that this process has caused each strip of tape to gain a negative electric charge. What could Ike do next to demonstrate that the negative charge of each strip has generated an electric field?