A copper wire of non-uniform area of cross-section is connected to a d.c. battery.The physical....

Описание: 📘 Class 12 Physics 2025–26 | PYQ Chapter 3 – Current Electricity

Detailed Explanation by Saif Sir
In this video, we solve and explain an important CBSE Previous Year Question (PYQ) from Chapter 3 – Current Electricity for Class 12 Physics. This concept-based question is frequently asked in board exams and is crucial for scoring full marks.

🔹 Question (CBSE 2020)
A copper wire of non-uniform area of cross-section is connected to a d.c. battery.
The physical quantity which remains constant along the wire is ________.

🔍 What You Will Learn in This Video
Concept of current flow in a non-uniform conductor
Why current remains the same throughout the wire
Board-exam oriented explanation in simple language

This video is highly useful for CBSE Board Exams 2025–26, NEET, and other competitive exams.

▶️ Chapter-wise Playlist (Class 12 Physics)
👉 Ch-1 Electric Charges and Field Class 12th Physics (Single Question in one video):    • Ch-1 PYQs Electric Charges and Field Class...  


👉 12th Physics PYQs Chapter 1 | Electric Charges and Field:    • 12th Physics PYQs Chapter 1 | Electric Cha...  


👉Ch-2 PYQs Electrostatic Potential and Capacitance Class 12th Physics (Single Question in One Video):    • Ch-2 PYQs Electrostatic Potential and Capa...  


👉Ch-3 PYQs Current Electricity Class 12th Physics (Single Question in One Video):
   • Ch-3 PYQs Current Electricity Class 12th P...  


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🎯 Best For
CBSE Class 12 Students
Board Exam Preparation 2025–26
Revision of PYQs
Concept clarity in Current Electricity

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