Capacitance And Capacitors

Question 1

What is a capacitor?

Answer 1

A capacitor is an electronic device that stores electric charge and energy in an electric field between two conductors.

Question 2

What does the equation Q = CV represent?

Answer 2

The relationship between charge (Q), capacitance (C), and potential difference (V).

Question 3

What is the SI unit of capacitance?

Answer 3

Farad (F)

Question 4

Convert 1 μF to farads.

Answer 4

1 μF = 1 × 10⁻⁶ F

Question 5

Formula for capacitance of a parallel plate capacitor?

Answer 5

C = ε₀A / d

Question 6

What is ε₀?

Answer 6

The permittivity of free space; ε₀ = 8.854 × 10⁻¹² C²/N·m²

Question 7

How is the electric field E between plates calculated using Gauss’s Law?

Answer 7

E = σ / ε₀, where σ = Q / A

Question 8

Formula for capacitors in series?

Answer 8

1/C_eq = 1/C₁ + 1/C₂ + …

Question 9

Formula for capacitors in parallel?

Answer 9

C_eq = C₁ + C₂ + …

Question 10

In series, what is common across capacitors?

Answer 10

The charge (Q) is the same.

Question 11

In parallel, what is common across capacitors?

Answer 11

The voltage (V) is the same.