ASVAB · Circuits and Ohm's Law

In a series circuit with resistors of 10 Ω, 20 Ω, and 30 Ω, what is the total resistance?

Correct answer

60 Ω

  1. A 6 Ω
  2. B 10 Ω
  3. C 30 Ω
  4. D 60 Ω

Why this is the answer

In a series circuit, resistances add: R_total = 10 + 20 + 30 = 60 Ω.
Source: ASVAB EI, Series Circuits