When a loose electrical connection occurs in a circuit, it creates an increase in resistance. According to Ohm's Law, which states that voltage equals current times resistance (V = I * R), an increase in resistance while maintaining the same voltage level will lead to a decrease in current. However, one key factor that is directly impacted by increased resistance is temperature.
As resistance increases in a conductor, it causes more energy to be dissipated as heat. This is due to the resistive nature of materials; as the electrical current passes through a higher-resistance path, more energy is lost as thermal energy. This phenomenon can lead to overheating, which can further elevate the temperature of the connection itself. Therefore, the correlation between increased resistance and raised temperature is a fundamental principle in electrical engineering, illustrating how resistance not only affects current flow but also how efficiently energy is transferred within a circuit.
In contrast, while voltage and current are inversely related under constant voltage conditions, and capacitance is a property that largely remains unchanged in this context, temperature is the direct result of the increased resistance scenario. Hence, temperature is the correct answer as it is a vital factor that increases in response to a loose electrical connection yielding higher resistance.