MDCAT Physics MCQ #1520

A capacitor has a capacitance of 5 μF when the dielectric is air. If the dielectric is replaced with a material of dielectric constant 4, its capacitance becomes

MDCAT Physics MCQ #1520

  1. Question 1

    Q1. A capacitor has a capacitance of 5 μF when the dielectric is air. If the dielectric is replaced with a material of dielectric constant 4, its capacitance becomes

    • A) 10 μF
    • B) 20 μF
    • C) 5 μF
    • D) 2.5 μF

    Answer: 20 μF

    Explanation: C = ε_r * C0 = 4 * 5 = 20 μF. Wrong options misinterpret dielectric constant effect.