विद्याभारती E पाठशाला

specific conductivity//स्पेसिफिक कंडक्टिविटि//विशिष्ट चालकता

for Physics :XII // by VIPIN SIR

https://youtu.be/YcJAt9un5RA
https://youtu.be/YcJAt9un5RA

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