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.

Question

Calculate the equivalent resistance.

Answer 1

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

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