Câu hỏi
Differentiate between a conductor and an insulator. 250 words remaining square
Giải pháp
4.6
(192 Votes)
John Cameron
Professional · Tutor for 6 years
Answer
Conductors allow electric current to pass easily due to many free electrons and low resistance (e.g., copper), while insulators resist current flow due to few free electrons and high resistance (e.g., rubber).
Explanation
1. Define conductor A conductor is a material that allows electric charge (usually electrons) to move freely due to the presence of many free electrons in its structure. 2. Define insulator An insulator is a material that resists the flow of electric charge due to having very few free electrons. 3. Key differences Conductors have low electrical resistance, high conductivity, and are often metals like copper, aluminum. Insulators have high electrical resistance, low conductivity, and are often non-metals like rubber, glass, plastic. 4. Physical property comparison Conductors: Good at transmitting heat and electricity; electrons move easily. Insulators: Poor at transmitting heat and electricity; electrons are bound tightly.