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An aluminium (alpha(Al)=4xx10^(-3)//^(@)...

An aluminium `(alpha_(Al)=4xx10^(-3)//^(@)C)` wire resistance `'R_(1)'` and carbon wire `(alpha_(c)=0.5xx10^(-3)//^(@)C)` resistance `'R_(2)'` are connected in series to have a resultant resistance of 18 ohm at all temperatures The values of `R_(1) and R_(2)` in ohms 

A

2, 16

B

12, 6

C

13, 5

D

14, 4

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The correct Answer is:
A
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AAKASH SERIES-CURRENT ELECTRICITY-EXERCISE - III
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  14. Two cells with same e.m.f. .E. and different internal resistances r(1)...

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  15. If in the circuit shown below. The internal resistance of the battery ...

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  16. A 6 V cell with 0.5Omega internal resistance , a 10 v cell with 1Omeg...

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  17. For a cell, the graph between the p.d.(V) across the terminals of the ...

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