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electrika
electrika
Student
College - Freshman

3 batteries develop the same power P=9W on a resistor, no matter if the link is serial or parallel. What power will develop a single battery?

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Posted by electrika on Monday June 29, 2009 at 2:48 AM and tagged with battery, link, power, resistor, science.

Answers:

  1. giorgiana1976
    giorgiana1976 Teacher
    Doctorate

    eNotes Editor

    Best answer as selected by question asker.

    P=R[nE/(R+r*n)]^2=R[E/(R+r/n)]^2, so R=r

    P=R[nE/(R+R*n)]^2=(E^2/R)[n/(n+1)^2]

    P1=R[E/(R+R)]^2=E^2/(4R)=(P/4)[(n+1)/n]^2

    P1=4.0W

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    Posted by giorgiana1976 on Monday June 29, 2009 at 10:50 AM