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We offer concept-based learning, exam-focused preparation, and clear subject guidance for Classes IX, X, XI & XII.. We offer concept-based learning, exam-focused preparation, and clear subject guidance for Classes IX, X, XI & XII..
“Education is not memorizing facts, it is training the mind to think.”
We believe every student can succeed with the right foundation. From weak basics to strong resu
📘 **Physics XI – Conductivity Numerical | Current Electricity**
Given:
Length **L = 20 m**
Cross-sectional area **A = 1 mm²**
Resistance **R = 5 Ω**
Using the formula:
σ = L / RA
σ = 20 / [5 × (1 × 10⁻⁶)]
σ = **4 × 10⁶ S/m**
or **4 MS/m**
📚 Class XI Physics – Current Electricity
Clear concepts with **Knowledge Gate Academy**.
▶ Watch the short lecture:
https://youtube.com/shorts/R5LYqazsEZg?feature=share
YouTube:
Instagram: /knowledgegate.edu2026
TikTok: .edu
14/03/2026
📘 **Physics XI – Conductivity Numerical | Current Electricity**
Given:
Length **L = 20 m**
Cross-sectional area **A = 1 mm²**
Resistance **R = 5 Ω**
Using the formula:
σ = L / RA
σ = 20 / [5 × (1 × 10⁻⁶)]
σ = **4 × 10⁶ S/m**
or **4 MS/m**
📚 Class XI Physics – Current Electricity
Clear concepts with **Knowledge Gate Academy**.
▶ Watch the short lecture:
https://youtube.com/shorts/R5LYqazsEZg?feature=share
YouTube:
Instagram: /knowledgegate.edu2026
TikTok: .edu
#shorts Physics XI Conductivity Numerical | σ = L / RA Explained #shorts 📘 **Physics XI – Conductivity Numerical****Data:**Length **L = 20 m**Cross-sectional area **A = 1 mm²**Resistance **R = 5 Ω**Using the formula:σ = L / RAσ =...
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