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anonymous

  • one year ago

what is the total power drawn by the circuit drawn inside? A. 20.0 W B. 2.14 kW C. 22.0 kW D. 220 kW

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  1. anonymous
    • one year ago
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    |dw:1433872139959:dw|

  2. Michele_Laino
    • one year ago
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    the current wich flows into R_1 is: I_1=110/20=...amperes

  3. anonymous
    • one year ago
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    we get 5.5 ?

  4. Michele_Laino
    • one year ago
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    ok!

  5. Michele_Laino
    • one year ago
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    now the current which flows into the resistor #2, is: I_2= 110/8=...amperes

  6. anonymous
    • one year ago
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    13.75!

  7. Michele_Laino
    • one year ago
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    ok!

  8. Michele_Laino
    • one year ago
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    finally the current which flows into resistor #3 is: I_3=110/500=...amperes

  9. anonymous
    • one year ago
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    0.22!

  10. Michele_Laino
    • one year ago
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    ok! Now the current provided by our battery is: 13.75+5.5+0.22=...amperes

  11. anonymous
    • one year ago
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    we get 19.47! so is choice A our solution? :O

  12. Michele_Laino
    • one year ago
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    no, since the power dissipated by our circuit is: 110* 19.47=...watt

  13. anonymous
    • one year ago
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    oh! 2141.7 ?

  14. Michele_Laino
    • one year ago
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    yes! 2,141.7 watts

  15. anonymous
    • one year ago
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    so that means how many kilowatts?

  16. anonymous
    • one year ago
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    2.14 kW? :/

  17. Michele_Laino
    • one year ago
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    you have divide by 1000

  18. Michele_Laino
    • one year ago
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    yes! that's right!

  19. anonymous
    • one year ago
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    ohh yay! thanks!! onto the next!:)

  20. Michele_Laino
    • one year ago
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    ok! :)

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