Question

ke 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?
A.
see if the strips repel each other when brought close together
B.
see if the strips will stick together when the sticky sides are pressed together
C.
see if one of the strips is longer or more massive than the other
D.
see if the strips respond to the force of gravity when dropped from a height

Answer 1

A. See if the strips repel each other when brought close together.

Reason: Both strips are negatively charged, and like charges repel. Observing a repulsive force between them demonstrates that the charges produce an electric field (Coulomb force). Options B–D involve mechanical adhesion, mass/length differences, or gravity and do not show the electric field.