The resistance–current relationship states that higher resistance results in what for current?

• A. False
• B. Not enough information
• C. Only for AC Circuits
• D. True

Answer: (D)

For a fixed voltage, current and resistance are inversely related according to Ohm’s law: I = V / R. That means when resistance goes up, current goes down. If you double the resistance, the current is cut in half; triple the resistance and the current is one third. This holds for DC and for AC in terms of instantaneous or RMS values for a purely resistive load, as long as the source voltage stays the same. So the idea that higher resistance results in less current is true. If the voltage changes, current changes with V while R stays the same, but the inverse relationship with resistance at a given voltage remains the same.