Question 31

Copper provides the least electrical resistance.

Copper is known for its excellent conductivity, making it the material with the least electrical resistance among the options provided.

A) Plastic

Plastic is an insulating material, meaning it has high electrical resistance. It prevents the flow of electricity, making it unsuitable for applications where low resistance is required.

B) Oak

Oak, being a type of wood, is also a poor conductor of electricity. It has relatively high resistance compared to metals, thus not providing a low-resistance path for electrical currents.

C) Rubber

Rubber is another insulating material with high electrical resistance. It is commonly used to coat wires and electrical components to prevent unwanted current flow, which indicates its inability to conduct electricity effectively.

D) Copper

Copper is one of the best conductors of electricity, with low electrical resistance. Its atomic structure allows electrons to flow freely, making it ideal for electrical wiring and components.

Conclusion

Copper is definitively the correct answer as it exhibits the least electrical resistance among the options given. In contrast, plastic, oak, and rubber all have high resistance and are primarily used as insulators, demonstrating their ineffectiveness in conducting electricity compared to copper.