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If the electric current in a …

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If the electric current in a lamp decrease by 5 percent then the power output decreases by_

    • Posted by Nikita Choudhary 3 years, 10 months ago

    CBSE > Class 12 > Physics
    • 5 answers

    Nikita Choudhary 3 years, 10 months ago

    Thanx

    0Thank You

    Aseem Mahajan 3 years, 10 months ago

    Rrplace the values of dI/I × 100 from 100 to 5. Then it becomes 2 × 5 = 10%

    0Thank You

    Aseem Mahajan 3 years, 10 months ago

    P = I²R
    logP = 2logI + logR
    Differentiating
    dP/P = 2 dI/I + dR/R
    dP/P × 100 = 2 dI/I × 100 + dR/R × 100
    dP/P × 100 = 2× 100 = 200%
    11 class concept used

    0Thank You

    Abir Mahato 3 years, 10 months ago

    Can you elaborate how

    0Thank You

    Aseem Mahajan 3 years, 10 months ago

    10%

    0Thank You

    ANSWER
    http://mycbseguide.com/examin8/

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