Question: Q. 13. The temperature coefficient of resistivity, for two materials and , are and respectively.
Two resistors and , made from materials and , respectively, have resistances of and at . Show on a diagram, the ‘colour code’, of a carbon resistor, that would have a resistance equal to the series combination of and at a temperature of .
(Neglect the ring corresponding to the tolerance of the carbon resistor).
A [Foreign Comptt. 2016]
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Solution:
Ans.
For Resistance
For Resistance
Hence, Total Resistance in series combination of and at :
orange
[CBSE Marking Scheme 2016]