NDA Physics PYQ Trick | Resistivity vs Resistance

Описание: NDA Physics PYQ explained with concept-based tricks that save time and boost accuracy.
If you struggle to differentiate Resistivity vs Resistance, this video will clear your confusion forever.
In this NDA Previous Year Question (PYQ) session, we break down Question 28 using pure concepts, not rote formulas. Many aspirants lose marks because they mix up length, area, resistivity, and resistance. This video fixes that mistake with crystal-clear logic and exam-ready shortcuts.
🔍 What this video covers:
Why resistivity does NOT depend on length or area
Factors affecting resistivity: material & temperature
Common trap questions asked in NDA, CDS, AFCAT
What happens when a wire is melted and radius becomes half
How resistance becomes 16 times using a simple trick
How to identify whether the question is about R or ρ in seconds
🎯 Why this matters for NDA aspirants:
PYQs are directly repeated with twists
Concept clarity = faster solving + fewer silly mistakes
Perfect for revision before exam
Ideal for students targeting NDA 2025, NDA 2026
✅ Exam Relevance:
This exact concept has appeared multiple times in:
NDA Physics
CDS
AFCAT
Other Defence Exams
👉 Watch till the end to lock this concept permanently.
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👉 Comment if you want PDF notes or next topic.



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