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 Decreases
• C. Current Stays The Same
• D. Current Reverses

Answer: (B)

When voltage is fixed, current follows I = V/R. If resistance increases, the current must drop to keep the same voltage driving the same circuit. Think of it like traffic: with a fixed pressure pushing cars (voltage) but a narrower road (higher resistance), fewer cars get through per second (lower current). For example, with 12 volts, increasing resistance from 6 ohms to 12 ohms reduces the current from 2 amperes to 1 ampere. So, the current decreases.

When voltage is fixed, current follows I = V/R. If resistance increases, the current must drop to keep the same voltage driving the same circuit. Think of it like traffic: with a fixed pressure pushing cars (voltage) but a narrower road (higher resistance), fewer cars get through per second (lower current). For example, with 12 volts, increasing resistance from 6 ohms to 12 ohms reduces the current from 2 amperes to 1 ampere. So, the current decreases.