a piece of wire of resistance R Iis cut into five equal parts. these parts are then connected in parallel . if the equivalent resistance of these combination is R¹ then the ratio R/R¹ is
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Showing results for a piece of wire of resistance R Is cut into five equal parts. these parts are then connected in parallel . if the equivalent resistance of these combination is R¹ then the ratio R/R¹ is
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प्रतिरोध r के तार का एक टुकड़ा पांच बराबर भागों में काटा जाता है, फिर इन भागों को समानांतर में जोड़ा जाता है यदि इन संयोजनों का समतुल्य प्रतिरोध r¹ है तो अनुपात r r है
When we cut the wire into 5 parts, each one has a length of l5 and all other parameters remain unchanged. So the resistance of each new segment isR5. Connecting them parallel gives a network as shown in fig1. So the ratio RR′=25 , which is the required answer.
answer 25