According to Ohm's law, which mathematical formula represents the relationship between voltage (V), current (I), and resistance (R)?
Answer and explanation
Correct answer: A. V = I * R
- Step 1: Ohm's law states that electric current through a conductor is directly proportional to potential difference across it. Step 2. The constant of proportionality is resistance: V = I R (or I = V / R). Answer: V = I R. Why not the others:* V = I / R inverts resistance; I = V R contradicts Ohm's law; R = V * I incorrectly multiplies voltage and current.
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