What role do insulators play in electrical circuits?

Insulators play a crucial role in electrical circuits by preventing the flow of electricity. They are materials that do not allow electric charges to move freely, which is essential for maintaining safety and functionality in electrical systems. Insulators are used to encase or separate conductors, ensuring that electricity travels along desired paths without leakage or unintended contact with other conductive materials. This characteristic is vital for protecting components and users from electrical faults, short circuits, and potential hazards.

For instance, the plastic coating around wires acts as an insulator, ensuring that the electricity flows through the wire instead of leaking out into the air or into contact with other conductive surfaces. By doing this, insulators help regulate electrical current and voltage, contributing to the overall stability and safety of the electrical circuit.