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Three resistors of 4, 6, and 10 ohms are connected in series. What is total resistance?

NASCLA Electrical exam practice question · Electrical Theory & Principles

Three resistors of 4, 6, and 10 ohms are connected in series. What is total resistance?

  • A10 ohms
  • B240 ohms
  • 20 ohms
  • D2.4 ohms

Why C is correct

Series resistances add directly because the same current passes through each element. Four plus six plus ten equals twenty ohms; reciprocal addition is used for parallel branches.

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