Red Seal Electrician Practice
Electrical mathQuestion 636 of 1506

When analyzing a circuit with a table of voltage, current and resistance for each resistor and for the total, where can Ohm's Law be applied?

  1. To any voltage and any resistance in the table
  2. Only to the values within the same row
  3. Only to the total voltage and an individual resistance
  4. Only to the values within the same column
Show answer

Correct answer: Only to the values within the same column

Ohm's Law needs voltage, current and resistance of the same part or the same two points.

Source: Lessons in Electric Circuits I: DC (Kuphaldt), 5.2: Simple Series Circuits

Practice electrical math

Questions last reviewed: 18 October 2026