OnlineCBT
Physics · Electrostatic Potential
हिन्दीConsider the following statements about a parallel plate capacitor with plate area \( A \) and separation \( d \) filled with vacuum: (I) The electric field just outside the plates (in Region I and II) is zero. (II) The electric field inside the plates is given by \( E = \frac{Q}{\varepsilon_0 A} \). (III) The potential difference between the plates is \( V = E d \). (IV) The capacitance \( C \) decreases if the separation \( d \) is decreased. Which of the above statements are correct?
Correct answer · Option 1
(I), (II) and (III) only
Explanation
Statements (I), (II), and (III) are correct. Statement (IV) is incorrect because \( C = \varepsilon_0 A / d \), so decreasing \( d \) increases \( C \).
