The surface of a photoconductor has been coated with electric charge. This charge will remain in place until you expose the surface to
A) an electric field.
B) a magnetic field.
C) both an electric field and a magnetic field.
D) light.

Question

Quizplus · Accepted Answer

The charge on a photoconductor remains in place until it is exposed to light, which causes the material to become conductive and allows the charge to move or dissipate. This is the principle behind how photocopiers and laser printers work.

The Surface of a Photoconductor Has Been Coated with Electric