A Large Plate Carries a Uniform Charge Density σ =

question 11

Multiple Choice

A large plate carries a uniform charge density σ = 8.85 × 10^-9 C/ m². A pattern showing equipotential surfaces with a 5 V potential difference would appear as

• A)a series of planes perpendicular to the plate, 1 cm apart.
• B)a series of lines perpendicular to the plate, 1 cm apart.
• C)a series of lines parallel to the plate, 1 cm apart.
• D)a series of circles of radius 1 cm, parallel to the plate.
• E)a series of planes parallel to the plate, 1 cm apart.

---

Definitions:

Theta Waves

Brainwave patterns associated with deep relaxation, meditation, and the early stages of sleep, typically in the frequency range of 4–7 Hz.

EEGs

A test that detects electrical activity in the brain using small, metal discs attached to the scalp.

Paradoxical Sleep

Another term for REM (Rapid Eye Movement) sleep, a phase of sleep characterized by rapid eye movements, more dreaming, and bodily movement.

REM Sleep

A unique phase of sleep characterized by rapid eye movements, dreaming, and near-paralysis of the body, indicative of very deep sleep.