The thermal and electrical conductivity of all metals is high compared to nonmetallic substances, such as plastics and ceramics, rocks, and solid salts.The aluminum foil, steel wool, paper clip, copper, charcoal stick, and graphite pencil were good conductors and displayed metallic properties. The...
A. Graphite B. Silicon C. Phosphorus D. Sulfur 相关知识点: 试题来源: 解析 A。题目中描述的元素是非金属且是良好的电导体。硅是半导体不是良好导体。磷和硫都是非金属但不是电导体。而石墨是非金属且是良好的电导体。反馈 收藏
百度试题 结果1 题目【题目】a good conductor, the metal is madeinto cables.It isT o beBeBeing 相关知识点: 试题来源: 解析 【解析】D 反馈 收藏
What is a conductor? A conductor is a material or substance that allows the flow of electricity or heat through it. What are the properties of a good conductor? A good conductor has low resistance, high electrical and thermal conductivity, and is usually a metal or a material with metallic...
Outside the conductor, the electric field is perpendicular to the conductor's surface. It has a zero charge density, ensuring that the positive and negative charges cancel each other and free charges exist only on the surface. In addition, conductors have low resistance and high thermal conduct...
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A single integrated circuit (IC), such as a microprocessor chip, can do the work of a set of vacuum tubes.Semiconductor MaterialsThere are several materials and elements used to make semiconductor. The basic requirement is that the material should not be a very good conductor of electricity, ...
4 (a)(i) Name the process by which thermal energy is transferred through a metal rod.4.0[1](ii) Describe how this process occurs.[2](b)An iron rod and a copper rod of equal length are each held by hand at one end, with the other end in the flame from a Bunsen burner, as sho...
The process in order to be covered with a metal mass is a good conductor of heat, a surface made of iron or an alloy of ironSTRASSER ALBERT