1 Name the substance from which heating electric current are made up of
2 Draw diagram of electical Magnet?
3 What is electric current
4 what is conductor
5 What is insulater
6 Example of good and bad
conductor
7 Draw open and closed circuit
8 Different components used in electro magnet like U shaped magnet etc.
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Answers
Answer:
electric current is the rate of flow of negative charges of the conductor
Answer:
1.Nichrome
Nichrome is used in heating appliances as it offers high resistance to the flow of current..
3.An electric current is a stream of charged particles, such as electrons or ions, moving through an electrical conductor or space. It is measured as the net rate of flow of electric charge through a surface or into a control volume
5.An electrical insulator is a material in which the electron does not flow freely or the atom of the insulator have tightly bound electrons whose internal electric charges do not flow freely; very little electric current will flow through it under the influence of an electric field
4.A conductor is a material which contains movable electric charges. In metallic conductors, such as copper or aluminum, the movable charged particles are electrons, though in other cases they can be ions or other positively charged species. ... Most familiar conductors are metallic
6.Metals, especially silver, are good electrical conductors. Copper is cheaper than silver, so it is made into millions of miles of electrical wiring every year. Materials like glass and plastic are poor electrical conductors, and are called insulators.
8.Electromagnets consist of coils, usually copper, wrapped tightly around a laminated core of ferromagnetic material (soft iron, steel, cobalt).
