Question

An aluminium (QA2 = 4 x 10-3/°C) wire resistance 'Ri' and carbon wire (ae = 0.5 x 10 R/°C) resistance 'R ' are connected in series to have a resultant resistance of 18 ohm at all temperatures. The values of R7 and R2 in ohms​

Answer 1

Hint:In this question, we can use the theory that the resistance of a combination of wires is independent of the variation in temperature. Using the expression for the resultant resistance of the wires in series and the expression for the resultant resistance after a variation in temperature we can find the solution.

Answer 2

Answer:

sorry I donot know !!!!!!!!!!!!