Two wires X and Y of the same material and of equal lengths having area of cross section A and 2A...

Описание: Class 12 Physics 2025-26 | Current Electricity PYQ | Current Density | CBSE Boards

In this video, Saif Sir explains an important Previous Year Question (PYQ) from Chapter 3 – Current Electricity for Class 12 Physics (2025-26 syllabus).

🔹 Question Covered:
Two wires X and Y of the same material and equal length but different cross-sectional areas (A and 2A) are connected in parallel across an ideal battery. Find the ratio of current density (Jₓ / Jᵧ).

🔹 Concepts Explained:
✔ Current Density (J = I/A)
✔ Parallel combination of conductors
✔ Application of Ohm’s Law
✔ Board-exam-oriented numerical approach

📘 This question is very important for CBSE Class 12 Boards, ISC, and competitive exams like JEE & NEET (basic physics).

🎯 Best for:
• Class 12 CBSE Physics students
• Board exam preparation 2025-26
• PYQ practice – Current Electricity
• Conceptual clarity with easy explanation

📌 Chapter: Current Electricity (Chapter 3)
📌 Exam: CBSE Class 12 Physics
📌 Year Asked: 2021 (PYQ)
👉 Watch till the end for clear logic, formulas, and exam tips.

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