anonymous
  • anonymous
In this circuit, which resistor will draw the least power? will draw inside!! A. R_1 B. R_2 C. R_3 D. the power will be the same for each resistor
Physics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
|dw:1433868602092:dw|
Michele_Laino
  • Michele_Laino
here the current is: I=12/(2.2+1.1+2.7)=...amperes
anonymous
  • anonymous
2!

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Michele_Laino
  • Michele_Laino
ok!
Michele_Laino
  • Michele_Laino
now the power dissipated by R_1 is: P_1= R_1 * I^2= 2.2* 4=...
anonymous
  • anonymous
8.8!
Michele_Laino
  • Michele_Laino
ok! the power dissipated by R_2, is: P_2= R_2 I^2 = 1.1* 4=...watts
anonymous
  • anonymous
4.4!
Michele_Laino
  • Michele_Laino
ok! finally the power dissipated by R_3, is: P_3 = R_e*I^2 = 2.7*4=...watts
Michele_Laino
  • Michele_Laino
oops.. P_3= R_3* I^2
anonymous
  • anonymous
10.8!
Michele_Laino
  • Michele_Laino
ok! reassuming, we have these dissipated powers: P_1=8.8 watts, P_2=4.4 watts P_3=10.8 watts which is the littlest value among them?
anonymous
  • anonymous
P2! so is choice B our solution?
Michele_Laino
  • Michele_Laino
correct!
anonymous
  • anonymous
yay!! thanks!:)
Michele_Laino
  • Michele_Laino
:)

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