A tiny charged pellet of mass m is suspended at rest by the electric field between two horizontal, charged metallic plates. The lower plate has a positive charge and the upper plate has a negative charge.

Which statement in the answers here is not true?
(a) The electric field between the plates points vertically upward.
(b) The pellet is negatively charged.
(c) The magnitude of the electric force on the pellet is equal to mg.
(d) If the magnitude of charge on the plates is increased, the pellet begins to move upward.

Transcribed Image Text:

Pellet + +