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Grade: 12

                        

if a wire of length L is stretched from a fraction inorder to make its resistance four times the original such that its new length is 3/2 times the original length... then find the fraction by which it is increased....

8 years ago

Answers : (1)

mani kanta
31 Points
							

Formula:

(R1/R2)*(l2/l1)=(A1/A2)

 

A1/A2=3/8

7 years ago
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