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Solution


Q.

A wire of resistance R and length L is cut into 5 equal parts. If these parts are joined parallely, then resultant resistance will be                       [2024]

 
1 1/25 R  
2 1/5 R  
3 25 R  
4 5 R  

Ans.

(1)       

            Resistance of each part = R5

            Total resistance = 15×R5=R25