Insulators are materials in which:

Insulators are materials in which:

• A. Particles Do Not Move Easily Through Them
• B. They Conduct Electricity Well
• C. They Are Magnetic
• D. They Are Transparent

Answer: (A)

Insulators resist the flow of electric current because their electrons aren’t free to move easily. In these materials, charges stay bound to atoms, so electricity doesn’t pass through readily. That’s why materials like plastic, rubber, wood, and glass are good insulators. Describing something as a good conductor would be opposite—insulators don’t conduct well. Magnetism and transparency aren’t defining features of insulators; magnetism is about magnetic forces, and transparency is about light, not electrical resistance.

Insulators resist the flow of electric current because their electrons aren’t free to move easily. In these materials, charges stay bound to atoms, so electricity doesn’t pass through readily. That’s why materials like plastic, rubber, wood, and glass are good insulators. Describing something as a good conductor would be opposite—insulators don’t conduct well. Magnetism and transparency aren’t defining features of insulators; magnetism is about magnetic forces, and transparency is about light, not electrical resistance.