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Conductors are materials having a low resistance so that current easily passes through them. The lower the resistance of the material, the more current can pass through it.
Тhe most common conductors are metals. Silver and copper are the best of them. The advantage of copper is that it is much cheaper than silver. Thus copper is widely used to produce wire conductors. One of the common functions of wire conductors is to connect a voltage source to a load resistance. Since copper wire conductors have a very low resistance a minimum voltage drop is produced in them. Thus, all of the applied voltage can produce current in the load resistance. It should be taken into consideration that most materials change the value of resistance when their temperature changes.
Metals increase their resistance when the temperature increases while carbon decreases its resistance when the temperature increases. Thus metals have a positive temperature coefficient of resistance while carbon has a negative temperature coefficient. The smaller is the temperature coefficient or the less the change of resistance with the change of temperature, the more perfect is the resistance material.
1)What are conductors?
2)What is the main function of conductors?
3)What types of conductors do you know?
4)Is there any difference between silver and copper conductors?
Conductors are materials having a low resistance so that current easily passes through them. The lower the resistance of the material, the more current can pass through it.
Тhe most common conductors are metals. Silver and copper are the best of them. The advantage of copper is that it is much cheaper than silver. Thus copper is widely used to produce wire conductors. One of the common functions of wire conductors is to connect a voltage source to a load resistance. Since copper wire conductors have a very low resistance a minimum voltage drop is produced in them. Thus, all of the applied voltage can produce current in the load resistance. It should be taken into consideration that most materials change the value of resistance when their temperature changes.
Metals increase their resistance when the temperature increases while carbon decreases its resistance when the temperature increases. Thus metals have a positive temperature coefficient of resistance while carbon has a negative temperature coefficient. The smaller is the temperature coefficient or the less the change of resistance with the change of temperature, the more perfect is the resistance material.
1)What are conductors?
2)What is the main function of conductors?
3)What types of conductors do you know?
4)Is there any difference between silver and copper conductors?
Answers & Comments
Ответ:
1 )металл
2)Одна из общих функций проводников - подключение источника напряжения к сопротивлению нагрузки.
3)серебро и медь
4)1Преимущество меди в том, что она намного дешевле серебра. Таким образом, медь широко используется для изготовления проводов.
1)Metals
2)One of the common functions of conductors is to connect a voltage source to a load resistor
3)silver and copper
4)The advantage of copper is that it is much cheaper than silver. Thus, copper is widely used to make wires.