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CBSE Class 10 Answered

A uniform wire of resistance R is cut into 3 equal pieces and these are joined in parallel.What is the resistance and resistivity of their combination?
Asked by | 28 May, 2011, 05:47: PM
answered-by-expert Expert Answer
When the wire of resistance R is cut into 3 equal pieces then each piece will consist of resistance 
So when these three equal pieces are connected in parallel then the equivalent resistance is
Then let us take wire to be 1 m length and cross section area be 1meter square then resistivity is
Answered by | 28 May, 2011, 12:55: PM

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