Materials with high resistances are used as what?

Materials with high resistances are used as what?

• A. Conductors
• B. Semiconductors
• C. Insulators
• D. Resistors

Answer: (C)

This question is testing how resistance relates to insulation. Materials that resist electrical current strongly—high-resistance materials—are used to prevent or minimize the flow of electricity. They act as insulators, keeping current from leaking where it could cause shocks, damage, or short circuits. In a vehicle, insulators surround wires, terminals, and components to prevent accidental contact with metal surfaces or other circuits, and to protect people from electric shocks and fires. Conductors have low resistance, so they’re used where you want electricity to move freely. Semiconductors have resistance that can change with conditions and are used in electronic devices to control current. Resistors are specific components chosen to limit current to a designed value; they’re often made from materials with relatively high resistance but their role is as a controlled element in a circuit, not general insulation.

This question is testing how resistance relates to insulation. Materials that resist electrical current strongly—high-resistance materials—are used to prevent or minimize the flow of electricity. They act as insulators, keeping current from leaking where it could cause shocks, damage, or short circuits. In a vehicle, insulators surround wires, terminals, and components to prevent accidental contact with metal surfaces or other circuits, and to protect people from electric shocks and fires.

Conductors have low resistance, so they’re used where you want electricity to move freely. Semiconductors have resistance that can change with conditions and are used in electronic devices to control current. Resistors are specific components chosen to limit current to a designed value; they’re often made from materials with relatively high resistance but their role is as a controlled element in a circuit, not general insulation.