What does a decrease in resistance in an electrical circuit allow?

A decrease in resistance in an electrical circuit allows for an increase in current. According to Ohm's Law, which states that current (I) is equal to voltage (V) divided by resistance (R), if the resistance decreases while the voltage remains constant, the current must increase to maintain the relationship defined by the equation I = V/R.

Essentially, with lower resistance, the circuit can allow more electrical charge to flow through, thus increasing the current. This principle is fundamental in understanding how electrical circuits operate and is critical knowledge for gas technicians who may work with gas appliances that involve electrical components.

While the other options touch on related concepts, they do not directly result from a decrease in resistance. An increase in current directly correlates with the decrease in resistance under constant voltage conditions, making it the correct choice for this question.