Two conductors have the same resistance at 
C but their temperature coefficients of resistance are 
. The respective temperature coefficients of their series and parallel combinations are nearly
a)
b)
c)
d)
Two conductors have the same resistance at C but their temperature coefficients of resistance are . The respective temperature coefficients of their series and parallel combinations are nearly
a)
b)
c)
d)
Question ID - 150453 | SaraNextGen Top Answer
Two conductors have the same resistance at C but their temperature coefficients of resistance are . The respective temperature coefficients of their series and parallel combinations are nearly
a)
b)
c)
d)
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Two conductors have the same resistance at |
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a) |
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b) |
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c) |
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d) |
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1 Answer
127 votes
Answer Key / Explanation : (d) -
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(d) Let
and For series combination,
Where,
or For parallel combination,
Where,
as
or as
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be the initial resistance of both conductors.
At temperature 
their resistances will be,
)
are small quantities.
is negligible.
is negligible
127 votes
Answer Link
127