A 40-PC Point Charge Is Placed at the Centre of a a Hollow

question 1

Multiple Choice

A 4.0-pC point charge is placed at the centre of a hollow (inner radius = 2.0 cm, outer radius = 4.0 cm) conducting sphere which has a net charge of 4.0 pC.Determine the magnitude of the electric field at a point which is 6.0 cm from the point charge.

• A)35 N/C
• B)25 N/C
• C)30 N/C
• D)20 N/C
• E)10 N/C

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Definitions:

Trichromatic Theory

A theory of color vision that explains how humans perceive color through the response patterns of three types of cones in the retina, sensitive to short, medium, and long wavelengths of light.

Three Types Of Cones

Refer to the photoreceptor cells in the retina of the eye responsible for color vision; they are sensitive to different wavelengths of light (long, medium, and short) corresponding to the colors red, green, and blue.

Perceive Color

The process by which beings with sight interpret the electromagnetic spectrum reflected off objects into the experience of color.

Retinex Theory

A theory explaining how the human eye perceives color, proposing that the brain uses comparative information from different light wavelengths.