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 3 Current Electricity. It is a part of Assertion Reason Questions for CBSE class 12 physics Series.
| Chapter | Current Electricity |
| 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 Current Electricity
Assertion Reason Questions
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): Current is the same at all points in a series circuit.
Reason (R): Charge is conserved in a closed circuit.
Ans. Option (A) is correct.
Explanation: In a series connection, no charge is lost or accumulated at any point. The same current flows throughout, and the reason explains this.
Difficulty Level: Medium
Q2. Assertion (A): Ohm’s law is not applicable to semiconductors.
Reason (R): Semiconductors do not have a constant resistance over varying voltage.
Ans. Option (A) is correct.
Explanation: In semiconductors, resistance varies with applied voltage and temperature, so Ohm’s law (V = IR) is not obeyed strictly. Reason correctly explains it.
Difficulty Level: Medium
Q3. Assertion (A): The internal resistance of a cell increases with decrease in electrolyte concentration.
Reason (R): Fewer ions in dilute electrolyte reduce the conductivity.
Ans. Option (A) is correct.
Explanation: With lower ion concentration, fewer charge carriers are available, increasing internal resistance. The reason correctly explains the assertion.
Difficulty Level: Hard
Q4. Assertion (A): The slope of the V-I graph of a filament bulb is not constant.
Reason (R): Resistance of a filament increases with temperature.
Ans. Option (A) is correct.
Explanation: As current increases, the filament gets hotter, increasing resistance. Therefore, the V-I relationship becomes nonlinear. The reason directly explains the assertion.
Difficulty Level: Hard
Q5. Assertion (A): The current through a junction in an electric circuit may differ for incoming and outgoing conductors.
Reason (R): The total current entering a junction is equal to the total current leaving it.
Ans. Option (D) is correct.
Explanation: Assertion is false — according to Kirchhoff’s Current Law, current at a junction is conserved, so incoming = outgoing. Reason is true (it states KCL), but it contradicts 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
- Ohm’s law
- Resistance and Resistivity
- Series and parallel circuits
- Kirchhoff’s laws
Current electricity powers everything from mobile phones to megastructures.
Assertion reason questions from the above given topic may be asked.
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Frequently Asked Questions (FAQs) on Current Electricity Assertion Reason Questions Class 12
Q1: What concepts are covered in Current Electricity?
A1: This chapter focuses on fundamental concepts related to current electricity.
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 Current Electricity?
A4: Understand each concept clearly and analyze both statements critically in context of Current Electricity.
