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A gigen wire of resistance 1ohms is stretched to double its length .what will be its new resistance

Answer»

ANSWER
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SIMPLE FORMULA

Let INITIAL Resistance be R1
Final Resistance be R2

r2 =  {<klux>N</klux>}^{2} r1
where n is the AMOUNT of timez length is multiplied

R2 = 2^2 × 1 ohm

R2 = 4 ohm
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