Question

An air capacitor is connected to a battery. The effect of filling the space between the plates with a dielectric is to increase

• A. The charge and the potential difference
• B. The potential difference and the electric field
• C. The electric field and the capacitance
• D. The charge and the capacitance

Answer 1

Answer: (D)

The charge and the capacitance

Answer 2

$C = \frac{\varepsilon_{0}KA}{d}$ ⇒ C ∝ K, Q = CV ⇒ Q ∝ C

( V = constant)