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CBSE Class 10 Answered

why do we use resistors in a circuit?   what is the use of it? what material it is made of?
Asked by ESHAN NEMA | 17 Apr, 2014, 07:20: PM
answered-by-expert 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 | 19 Apr, 2014, 02:31: PM

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