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Electricity

Resistors in series - formula in LaTeX

In a series connection the resistances add up and the same current flows through every resistor. The ellipsis is \dots: with the amsmath package LaTeX centers it between the plus signs, which three plain periods would not do.

Rz=R1+R2+⋯+RnR_z = R_1 + R_2 + \dots + R_n

LaTeX code

$$
R_z = R_1 + R_2 + \dots + R_n
$$

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What the symbols mean

RzR_z
equivalent resistance (Ω)
R1,…,RnR_1,\dots,R_n
resistances of the individual resistors (Ω)

An electricity and magnetism formula - the basis of circuit problems and electrical lab reports.

Worked example

Three resistors of 100 Ω, 220 Ω and 330 Ω connected one after another. Write the unit after every number or once after the parentheses; just do it the same way throughout the document.

Rz=(100+220+330) Ω=650 ΩR_z = (100 + 220 + 330)\,\Omega = 650\,\Omega

LaTeX commands in this formula

x_{0}
subscript; wrap several characters in braces
\dots
ellipsis

How to use this formula in LaTeX?

  1. Copy the code with the button above - $$…$$ is centered display math.
  2. Paste it into the CamteX editor, Overleaf or any LaTeX document.
  3. Inside a sentence, use single $…$ instead of double.
  4. The formula works without extra packages.

Related formulas - Electricity

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