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If the current through an incandescent lamp decreases by 20%, how much change will be there in its illumination?

Option 1 -

36%

Option 2 -

64%

Option 3 -

20%

Option 4 -

40%

0 1 View | Posted a month ago
Asked by Shiksha User

  • 1 Answer

  • A

    Answered by

    alok kumar singh | Contributor-Level 10

    a month ago
    Correct Option - 1


    Detailed Solution:

    Kindly go through the solution

    p = i2R

    P' = 0.64 i2R

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