Use the words below in the correct form. You need to use some words more than once. lose conductor superconductor discover - вопрос №3721038

conductive resistance mercury cool below superconductive When an electric current is passed through a conductor some of the energy ______ in the form of heat and light. The amount of energy lost varies depending on the individual material’s electrical _________. Some materials, like copper and gold, are great _______ of electricity and have very low ________. Scientists __________that the colder these materials are the more ________ they become. But no matter how cold you make copper or gold, it will always show some electrical ___________. Mercury, however, is different. In 1911, when scientists _______ a sample of ________to 4.2 degrees above absolute zero, its _______abruptly disappeared: the first _________ was discovered. Gradually, more and more superconductive materials have been found that show zero electrical resistance _______a certain critical temperature. When _________ is zero, electricity is conducted perfectly, without any loss and a current can theoretically flow in a closed loop for ever.This has been demonstrated by scientists who have sustained electrical currents in superconductive rings for years without any measurable depreciation of energy and it doesn’t end there; not only do ______________have absolutely zero________ they also don’t like to let magnetic fields to pass through.

апрель 11, 2020 г.