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

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

In this formula, if the voltage does not change and the resistance increases, the result is that the current flowing through the circuit will decrease. This principle illustrates the inverse relationship between current and resistance when voltage is held steady. In practical terms, as resistance increases—due to factors such as additional components in the circuit or material properties—the amount of current that can flow is reduced, consistent with the foundational concepts of electrical circuits.