Using Ohm's law, which statement correctly relates voltage, current, and resistance?

• A. Voltage equals current times resistance
• B. Voltage plus resistance equals current
• C. Current equals voltage times resistance
• D. Resistance equals voltage times current

Answer: (A)

Ohm's law ties voltage, current, and resistance together in one simple relation: V = I R. This means the voltage across a conductor equals the current flowing through it times its resistance. That’s why the statement "Voltage equals current times resistance" is the correct description. It also lines up with units: volts come from amperes times ohms, and you can rearrange the equation to I = V / R or R = V / I to solve for any one variable if you know the other two. The other forms don’t fit because they either use the wrong operation (adding) or swap the relationship, which would give incorrect units and physically inconsistent results—current isn’t equal to voltage times resistance, nor is resistance equal to voltage times current.