A catheter (1) insertable into a living body percutaneously for administering or withdrawing a fluid or introducing a wired instrument or object (e.g., an electrical conductor), which catheter comprises: At a proximal end (4), a tip (5) intended to be positioned outside the body (2);...
A conductor, or electrical conductor, is a substance or material that allows electricity to flow through it. In a conductor, electricalchargecarriers, usuallyelectronsor ions, move easily fromatomto atom when voltage is applied. Most metals like copper are considered good conductors, while nonmetals...
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C.An Electrical Conductor D.A Rechargeable Device [答题区] 题号 1 2 3 4 5 6 7 8 答案 题号 9 10 11 12 13 14 15 答案 第二节(共5小题;每小题2.5分,满分12.5分) 阅读下面短文,从短文后的选项中选出可以填入空白处的最佳选项。选项中有两项为多余选项。 [2023·山东省烟台市高三二模]You ma...
Hint:Let us first understand the basic definition of an electrode, nature of electrodes and the term “inert”. An electrode is an electrical conductor by which electrons flow through to generate current. There are two types of electrodes- cathodes and anodes. Catho...
Carbon in the form of graphite is the only non-metallic element that conducts electricity.As we all know, graphite is composed of sheets of hexagons of carbon atoms joined by covalent bonds. Between each sheet, there are weaker (pi) bonds along which the electrons are free to move. It ...
Batteries are common energy sources which convert chemical energy to electrical energy. They have two terminals, which connect to the rest of the circuit. On one terminal there are an excess of negative charges, while all of the positive charges coalesce on the other. This is an electric pot...
Which of the following materials is likely to be the best conductor? A.iron B.sulfur C.carbon D.tin Does silver metal possess electrical conductivity? Explain. Describe why most of the compounds formed by transition elements are coloured. ...
of all metals, aluminum, however, is a better conductor than iron. Iron and aluminum are used vastly in several industrial products, and aluminum has an edge due to its corrosion resistance. On the other hand, iron corrodes quickly; it is mixed with carbon to make stainless steel, an ...