Two Parallel Circular Plates,each with a Radius of

question 99

Multiple Choice

Two parallel circular plates,each with a radius of
And carrying equal-magnitude surface charge densities of
Are separated by a distance of
With only air between them.How much energy is stored in these plates? (ε₀ = 8.85 × 10^-12 C²/N ∙ m²)

• A)78 nJ
• B)25 nJ
• C)7.9 nJ
• D)250 nJ

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Definitions:

Culture Media

Nutrient-rich substances used in laboratories to grow and maintain microorganisms, cells, or plant tissues under controlled conditions.

Gram Positive

Refers to bacteria that retain the crystal violet stain used in Gram's method of staining, indicating a thick peptidoglycan cell wall.

Gram Staining

A laboratory technique used to classify bacteria into two groups (Gram-positive and Gram-negative) based on the biochemical properties of their cell walls.

Microorganisms

Microscopic entities, including bacteria and viruses, that may cause infectious diseases but also play essential roles in ecosystems.