What is the formula for equivalent resistance in series?
GeneralClass 12AllAnswered 27 Mar 2026
Answer
For resistors connected in series, the equivalent resistance formula is:
R_eq = R₁ + R₂ + R₃ + ... + Rₙ
Simply add all the individual resistance values together. For example, three resistors of 10Ω, 20Ω, and 30Ω in series give an equivalent resistance of 60Ω.
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