Does an increase in voltage cause a corresponding increase in current?

• A. No, decrease
• B. Yes
• C. No, increase
• D. It depends

Answer: (A)

Increasing voltage raises the current when the resistance stays the same, because the electric potential difference drives the flow of charges. Ohm’s Law tells us I = V / R, so with a fixed R, increasing V directly increases I (doubling the voltage doubles the current). For a simple resistor this relationship is linear and predictable. The idea that increasing voltage would decrease current isn’t how a basic Ohmic load behaves. In more complex, non-ohmic devices, the current–voltage relationship can be nonlinear, but for a straightforward resistor, more voltage means more current.