why do we use resistors in a circuit?
 
what is the use of it?
what material it is made of?

Asked by ESHAN NEMA | 17th Apr, 2014, 07:20: PM

Expert Answer:

A resistance wire (resistor) is generally made from an alloy called manganin (84% copper, 12% manganese, 4% nickel) and it has a fixed resistance depending upon its length and thickness. 
 
It is used in a circuit to provide obstruction to the current and to get the desired value of current.

Answered by  | 19th Apr, 2014, 02:31: PM

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