Which electrical component would be used to limit current flow in a circuit?

The ability of a component to limit current flow in a circuit is a fundamental aspect of how various electronic devices operate. A resistor is specifically designed for this purpose. When installed in a circuit, a resistor impedes the flow of electric current, which is measured in ohms according to Ohm’s Law (V = IR, where V is voltage, I is current, and R is resistance). This characteristic allows resistors to control the amount of current that can pass through different parts of a circuit, thereby preventing overloads and protecting sensitive components from damage.

In contrast, capacitors store and release electrical energy but do not primarily limit current flow. Conductors are materials that allow current to flow easily with minimal resistance, while insulators resist current flow entirely, making them unsuitable for controlling current in a circuit. Hence, the use of a resistor is essential in various applications for ensuring safe and effective current management in electronic systems.