What is typically the effect of overloading a circuit?

Overloading a circuit typically results in tripped breakers or blown fuses. When a circuit is overloaded, it means that too much electrical current is flowing through it, exceeding the safe capacity of the circuit. Circuit breakers and fuses are safety devices designed to protect electrical systems from damage caused by excessive current. When the current surpasses the limit, these devices will interrupt the electrical flow by tripping or blowing, thereby preventing overheating, potential fire hazards, and damage to electrical equipment. This protective mechanism is crucial for maintaining safety in any electrical installation.

In contrast, the other options do not accurately describe the effects of circuit overload. Increased efficiency and improved quality of power are not outcomes of overloading but rather are characteristics of properly functioning circuits. Reduced voltage output can occur in situations with heavy loads, but it is not the primary effect of overloading; the immediate response is to disconnect the circuit for safety reasons.