What happens to current when voltage increases while resistance remains constant?

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

Answer: (C)

When voltage increases while the resistance in a circuit remains constant, the current increases. This relationship is defined by Ohm's Law, which states that current (I) is equal to voltage (V) divided by resistance (R), or I = V/R.

If you keep the resistance constant and increase the voltage, the effect is a direct proportional increase in the current. For instance, if the voltage doubles and the resistance remains unchanged, the current will also double. This principle is fundamental in understanding how electrical circuits operate, especially in troubleshooting and designing circuits where you want to control the flow of current by adjusting voltage, as long as resistance is constant.