Question Detail

PHY 102 Capacitors and Capacitance Objective Question

Question

A parallel plate capacitor has plates of area 0.05 m² separated by 0.001 m with air between them. What is its capacitance? (ε₀ = 8.85 × 10⁻¹² F/m)
Options
A 4.425 × 10⁻¹⁰ F
Correct Answer
B 4.425 × 10⁻⁹ F
C 4.425 × 10⁻¹¹ F
D 4.425 × 10⁻⁸ F
Correct Answer

Option A is the correct answer.

Detailed Explanation

C = ε₀A/d = (8.85 × 10⁻¹²)(0.05)/(0.001) = 4.425 × 10⁻¹⁰ F = 442.5 pF.

Hint

Multiply ε₀ × area, then divide by separation.

Question Info