Final answer:
1) To limit the amount of energy that moves through the circuit. Resistors in a circuit serve the crucial function of limiting or controlling the flow of electric current.
Step-by-step explanation:
1) To limit the amount of energy that moves through the circuit. Resistors in a circuit serve the crucial function of limiting or controlling the flow of electric current. They are designed to resist the flow of electrons, converting electrical energy into heat. The resistance, measured in ohms, determines how much the resistor impedes the current. By adjusting the value of resistors, one can regulate the current and voltage in a circuit, ensuring that components receive the appropriate amount of electrical energy. Resistors are fundamental in various applications, from setting the bias point in electronic devices to protecting components from excessive current flow and preventing circuit damage.