# Physics

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A 9.00 V storage battery is connected to three resistors, 4.25 Ω, 11.0 Ω, and 21.0 Ω, respec-tively. The resistors are joined in series.
Calculate the equivalent resistance.

• Physics -

For resistors in series,
R = R1+R2+R3

For parallel resistors,
1/R = 1/R1 + 1/R2 + 1/R3

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