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Electrostatic Potential and Capacitance — Physics STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 SciencePhysicsElectrostatic Potential and Capacitance1 Mark
Question
For two statements are given-one labelled Assertion (A) and the other labelled Reason (R). Select the correct answer to these questions from the codes (a), (b), (c) and (d) as given below.
  1. Both A and R are true, and R is the correct explanation of A.
  2. Both A and R are true, but R is not the correct explanation of A.
  3. A is true, but R is false.
  4. A is false, and R is also false.
Assertion (A): Increasing the charge on the plates of a capacitor means increasing the capacitance.
Reason (R): Capacitance is directly proportional to charge.
✓

Answer

  1. A is false, and R is also false.
Explanation:
On increasing the charge, potential increases. But capacity of a capacitor is fixed by geometry of condenser $\Big(\text{C}=\frac{\epsilon_0\text{A}}{\text{d}}\Big).$ Capacitance is independent of charge.

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