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Krishna Sharma • 46.84K Points
Coach Physics
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Q. एक तार जिसकी लम्बाई ∫ तथा प्रतिरोध R है को इस प्रकार मोड कर उमेठ दिया गया की उसकी लम्बाई आधी हो गयी है तार का नया प्रतिरोध होगा?

(A) R/2
(B) R/4
(C) 2R
(D) 4R
Correct Answer - Option (B)

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