A Metal Sphere of Radius 10 Cm Carries a Charge

question 9

Multiple Choice

A metal sphere of radius 10 cm carries a charge of +2.0 μC uniformly distributed over its surface.What is the magnitude of the electric field due to this sphere at a point 5.0 cm outside the sphere's surface? (k = 1/4πε₀ = 8.99 × 10⁹ N ∙ m²/C²)

• A)4.0 × 10⁵ N/C
• B)8.0 × 10⁵ N/C
• C)4.2 × 10⁶ N/C
• D)4.0 × 10⁷ N/C
• E)8.0 × 10⁷ N/C

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Definitions:

Hybrid Inviability

Hybrid inviability is a postzygotic barrier where hybrid offspring fail to survive to maturity, reducing the chances of genes being exchanged between different species.

Temporal Isolation

A mechanism of reproductive isolation in which two species breed at different times, preventing them from interbreeding.

Hybrid Breakdown

A postzygotic barrier where hybrid offspring have reduced survival or fertility rates.

Gametic Isolation

A prezygotic reproductive barrier where genetic differences prevent gametes from different species from fusing to form a zygote, thus preventing inter-species reproduction.