Physics, asked by ahtishamasif8924, 11 months ago

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Answered by kailashmeena123rm
6

ANSWER option (A)

ACCORDING TO OHMS LAW

V = I R

R = V /I

unit of V = volt

unit of I = A

so, unit of resistance R = V/A

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Answered by shivimishra3843
8

Answer:

ans is (a)

Explanation:

R = l.ρ / A

जहाँ

l उसकी लम्बाई है

A अनुप्रस्थ परिच्छेद क्षेत्रफल है, और

ρ वस्तु की प्रतिरोधकता है

इसकी खोज जार्ज ओह्म ने सन 1820 ई. में की। [1], विद्युत प्रतिरोध यांत्रिक घर्षण के कुछ कुछ समतुल्य है। इसकी SI इकाई है ओह्म (चिन्ह Ω)

prtrodh=volt/ampiyer

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