Last Updated on April 17, 2025 by XAM CONTENT
Hello students, we are providing assertion reason questions for class 12. Assertion Reason questions are the new question format that is introduced in CBSE board. The resources for assertion reason questions are very less. So, to help students we have created chapterwise assertion reason questions for class 12 physics. In this article, you will find assertion reason questions for CBSE class 12 physics Chapter 2 Electrostatic Potential and Capacitance. It is a part of Assertion Reason Questions for CBSE class 12 physics Series.
| Chapter | Electrostatic Potential and Capacitance |
| Type of Questions | Assertion Reason Questions |
| Nature of Questions | Competency Based Questions |
| Board | CBSE |
| Class | 12 |
| Subject | Physics |
| Useful for | Class 12 Studying Students |
| Answers provided | Yes |
| Difficulty level | Mentioned |
| Important Link | Class 12 Physics Chapterwise Assertion Reason |
Assertion Reason Questions on Electrostatic Potential and Capacitance
Directions:
In the questions given below, there are two statements marked as Assertion (A) and Reason (R).
Read the statements carefully and choose the correct option:
(A) Both A and R are true, and R is the correct explanation of A.
(B) Both A and R are true, but R is not the correct explanation of A.
(C) A is true, but R is false.
(D) A is false, but R is true.
Q1. Assertion (A): The electric potential is constant throughout the volume of a conductor in electrostatic equilibrium.
Reason (R): Electric field inside a conductor in electrostatic equilibrium is zero.
Ans. Option (A) is correct.
Explanation: Since no work is done to move a charge inside a conductor (E = 0), potential is the same everywhere inside. Reason correctly explains the assertion.
Difficulty Level: Medium
Q2. Assertion (A): A parallel plate capacitor can store more charge if a dielectric is inserted between its plates.
Reason (R): The dielectric increases the effective capacitance of the capacitor.
Ans. Option (A) is correct.
Explanation: Dielectrics increase capacitance by reducing the effective electric field, allowing more charge to be stored at the same voltage.
Difficulty Level: Hard
Q3. Assertion (A): Work done in moving a unit positive charge between two points having the same potential is zero.
Reason (R): Electric potential difference between two equipotential points is zero.
Ans. Option (A) is correct.
Explanation: Since potential difference is zero, the electric field does no work in moving the charge. The reason correctly supports the assertion.
Difficulty Level: Medium
Q4. Assertion (A): Electric field is always directed from a region of higher potential to a region of lower potential.
Reason (R): Electric field is the negative gradient of electric potential.
Ans. Option (A) is correct.
Difficulty Level: Hard
Q5. Assertion (A): The capacitance of a parallel plate capacitor is inversely proportional to the distance between the plates.
Reason (R): Capacitance is directly proportional to the area of plates and inversely to the distance between them.
Ans. Option (A) is correct.
Explanation: Capacitance is given by $C=\frac{\varepsilon_0 A}{d}$. Both statements are true, and the reason explains the assertion.
Difficulty Level: Easy
Also check
- Current Electricity Class 12 Assertion Reason Questions Physics Chapter 3
- Electrostatic Potential and Capacitance Class 12 Assertion Reason Questions Physics Chapter 2
- Electric Charges and Fields Class 12 Assertion Reason Questions Physics Chapter 1
🚀 Boost Your Exam Prep: Get assertion reason questions for all subjects (Class 6-12) now!
Topics from which assertion reason questions may be asked
- Electrostatic potential
- Equipotential surfaces
- Capacitance
- Parallel plate capacitor
Capacitance defines how systems store electric potential energy.
Assertion reason questions from the above given topic may be asked.
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Frequently Asked Questions (FAQs) on Electrostatic Potential and Capacitance Assertion Reason Questions Class 12
Q1: What concepts are covered in Electrostatic Potential and Capacitance?
A1: This chapter focuses on fundamental concepts related to electrostatic potential and capacitance.
Q2: What are assertion reason questions?
A2: These consist of an assertion and a reason. Students must assess both for correctness and logical relation.
Q3: Are assertion reason questions part of Class 12 Physics exams?
A3: Yes, they are competency-based and included in CBSE exams.
Q4: How to approach assertion reason questions in Electrostatic Potential and Capacitance?
A4: Understand each concept clearly and analyze both statements critically in context of Electrostatic Potential and Capacitance.
