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Length is increased by 10% then …

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Length is increased by 10% then how much % will resistance change ??

    • Posted by Priya Dharshini 6 years, 2 months ago

    CBSE > Class 12 > Physics
    • 5 answers

    Ďãřşháñăã Yadav ? ? ? 6 years, 2 months ago

    yup this will be the answer

    1Thank You

    Priya Dharshini 6 years, 2 months ago

    I think so new l1=l and l2= l+0.1l= 1.1l, r2=row(l.1)^2/v R2=1.21r1, R2-r1/r1 ×100, 1.21r1-r1×100=0.21×100= 21%.. i saw this in sl arora..

    0Thank You

    Priya Dharshini 6 years, 2 months ago

    Yes is 21%..

    0Thank You

    Ďãřşháñăã Yadav ? ? ? 6 years, 2 months ago

    Kya final answer 21% hai?

    3Thank You

    Aman Kumar 6 years, 2 months ago

    We know , R= pL/A ..so if we increase length by 10% i.e 0.1 then...the area of cross section will also decrease by 0.1 therefore , R= (0.1)pL/A/0.1....=> R = (0.01) p L / A....but esske baad mujhe nhi samjh aa rha kya hoga???

    1Thank You

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