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Editor
 Sep 18, 2022
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Three resistors connected in series have individual voltages labeled $\rm{V_{1}}$, $\rm{V_{2}}$ and \rm{V_{3}} respectively. Which of the following expresses the value of the total voltage $\rm{V_{T}}$ taken over the three resistors together?
Difficulty: Easy
A: 
$\rm{V_{T}=V_{1}+V_{2}+V_{3}}$
B: 
$\rm{V_{T}=\frac{1}{V_{1}}+\frac{1}{V_{2}}+\frac{1}{V_{3}}}$
C: 
$\rm{V_{T}= \left( \frac{1}{V_{1}}+\frac{1}{V_{2}}+\frac{1}{V_{3}} \right)^{-1}}$
D: 
$\rm{V_{T}=V_{1}=V_{2}=V_{3}}$
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