If resistance increases while voltage remains constant, what happens to current?

If resistance increases while voltage remains constant, what happens to current?

• A. Current increases
• B. Current stays the same
• C. Current decreases
• D. Current becomes negative

Answer: (C)

When voltage is constant, current is determined by I = V/R. If resistance increases, the same driving voltage pushes fewer charges per second, so the current falls. For example, with a 12 V source, moving from 6 Ω to 12 Ω reduces current from 2 A to 1 A. This shows the inverse relationship between current and resistance under a fixed voltage. The current won’t become negative unless the voltage polarity is reversed or the reference direction is flipped, and it won’t stay the same if resistance changes.

When voltage is constant, current is determined by I = V/R. If resistance increases, the same driving voltage pushes fewer charges per second, so the current falls. For example, with a 12 V source, moving from 6 Ω to 12 Ω reduces current from 2 A to 1 A. This shows the inverse relationship between current and resistance under a fixed voltage. The current won’t become negative unless the voltage polarity is reversed or the reference direction is flipped, and it won’t stay the same if resistance changes.