Each Plate of a Parallel-Plate Air-Filled Capacitor Has an Area

question 22

Multiple Choice

Each plate of a parallel-plate air-filled capacitor has an area of 0.0020 m², and the separation of the plates is 0.020 mm. An electric field of 3.9 x 10⁶ V/m is present between the plates. What is the surface charge density on the plates? (ε₀ = 8.85 × 10^-12 C²/N ∙ m²)

• A) 35 µC/m²
• B) 73 µC/m²
• C) 17 µC/m²
• D) 52 µC/m²
• E) 87 µC/m²

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Definitions:

Equilibrium Price

The market price at which the quantity of a good demanded equals the quantity supplied, leading to market balance.

Equilibrium Quantity

The quantity of goods or services supplied and demanded at the equilibrium price, where market supply and demand balance.

Equilibrium Price

The price at which the quantity of goods supplied equals the quantity of goods demanded in a market, resulting in no surplus or shortage.

Equilibrium Quantity

The level of goods or services on offer and needed at the market's equilibrium price.