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A resistance wire is stretched so as to double its length. Its new resistivity will have a magnitude
  • a)
    2 times its original value
  • b)
    4 times its original value 
  • c)
    8 times its original valu
  • d)
    same as its original value
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
A resistance wire is stretched so as to double its length. Its new res...
When a wire is stretched, its resistivity remains unchanged. It is because resistivity of a conductor depends only on its material and is independent of its length or cross- section area.
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Most Upvoted Answer
A resistance wire is stretched so as to double its length. Its new res...
Achaa Shivani....

m example deke smjha ta hu tumko

For eg= Jse hum ek chewgum ko khate h...usko hum kich ke lamba kr dete h....bt uske flavour mein koi change ni hota...

as respectively Wire ko kitna bhi strech krlo jitna uska potential hoga wo utna hi current ko resist krega...its all about Material Quality
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Community Answer
A resistance wire is stretched so as to double its length. Its new res...
There will be no effect in resistivity either the wire is stretched or compressed because resistivity is a property of material . For ex -Copper has a lower resistivity and is a better conductor of electricity than iron. ... Copper is a better conductor than iron, which means current can flow easier (with less resistance) through copper.
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A resistance wire is stretched so as to double its length. Its new resistivity will have a magnitudea)2 times its original valueb)4 times its original valuec)8 times its original valud)same as its original valueCorrect answer is option 'D'. Can you explain this answer?
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