anonymous
  • anonymous
In the circuit shown, the lowest voltage drop will occur across which of the following resistors? R1, R2, R3, or R4 ?
Physics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
Michele_Laino
  • Michele_Laino
here, the total resistance, is: \[\Large {R_{TOTAL}} = 8.5 + 3.2 + \frac{1}{{\frac{1}{{13}} + \frac{1}{{18}}}} = ...\]
anonymous
  • anonymous
ok! so we get 19.248?

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Michele_Laino
  • Michele_Laino
ok!
Michele_Laino
  • Michele_Laino
current is: \[\Large I = \frac{V}{{{R_{TOTAL}}}} = \frac{{15}}{{19.25}} = ...\]
anonymous
  • anonymous
0.779?
Michele_Laino
  • Michele_Laino
ok!
Michele_Laino
  • Michele_Laino
voltage drops: \[\Large \begin{gathered} {V_1} = {R_1}I = 8.5 \times 0.78 = ... \hfill \\ {V_{AB}} = {R_{AB}}I = 7.55 \times 0.78 = ... \hfill \\ {V_4} = {R_4}I = 3.2 \times 0.78 = ... \hfill \\ \end{gathered} \] where: V_AB is the voltage drop across R_2 and the voltage drop across R_3
anonymous
  • anonymous
6.63 5.889 2.496 ?
Michele_Laino
  • Michele_Laino
ok!
anonymous
  • anonymous
lowest would be R4? :/
Michele_Laino
  • Michele_Laino
that's right!
anonymous
  • anonymous
yay! thanks!!:)
Michele_Laino
  • Michele_Laino
:)

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