Question #187Basic Electricity and Electronics

What formula is used to calculate resistance in a circuit?

  1. Resistance (R) equals voltage (E) multiplied by current (I)
  2. Resistance (R) equals voltage (E) divided by current (I) [R=E/I Ohm's Law] ✓ Correct answer
  3. Resistance (R) equals voltage (E) added to current (I)
  4. Resistance (R) equals voltage (E) minus current (I)
Explanation: Ohm’s law rearranged for resistance is R = E/I; multiplying voltage by current gives power, not resistance.