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दिए गए चित्र में A और B के बिच तुल्य प्रतिरोध होगा -
image
A. 3 ओम
B. 12 ओम
C. 23 ओम
D. 8 ओम

1 Answer

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Best answer
Correct Answer - B
image
बंद जल के किरचॉफ के द्वितीय नियम से ,
` 6UI_(1)+6I_(2) - 8 (I-I_(1)) = 0 `
बंद जाल DCED में ,
`(3+3) (I_(1)-I_(2)) +6I_(3) - 6I_(2) = 0 `
बंद जाल ECBE में ,
हल करने पर भुजा में बहने वाली धारा `= I- I_(1)`
= भुजा CB में बहने वाली धारा
तथा `I_(2) = - I_(3)`
इस प्रकार और में समान धारा बहती है । इसी तरह और में समान धारा बहती है । अतः दिए गये परिपथ को निम्न प्रकार से बनाया जा सकता है -
image
स्पष्तः है की ` 1/(R_(DE)) = 1/(3+3)+ 1/(6+6)`
अतः ` R_(AB) = ((132)/9 xx16)/(16+(132)/9)`
= ` 7.65 Omega`

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