What normally happens to current in a DC circuit if you increase the resistance?

In a direct current (DC) circuit, when resistance is increased, the current flowing through the circuit decreases. This relationship is described by Ohm's Law, which states that the current (I) is equal to the voltage (V) divided by the resistance (R), or I = V/R.

When the resistance increases while the voltage remains constant, the formula indicates that the current must decrease to maintain the equality. This is because a higher resistance restricts the flow of electrons, resulting in a lower current. Thus, as you increase resistance, less current can flow through the circuit, affirming that the correct answer is that the current decreases.