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Q.

Nichrome or Manganin is widely used in wire bound standard resistors because of their 

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a

very weak temperature dependent resistivity. 

b

strong dependence of resistivity with temperature. 

c

temperature independent resistivity 

d

mechanical strength.  

answer is B.

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Detailed Solution

These materials exhibit a very weak dependence of resistivity on temperature. Their resistance values would be changed very little with temperature as shown in figure. Hence these materials are widelyused as heating element.

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