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Answer to Question #61341 in Electromagnetism for muhammad umar

Question #61341
9) A coil of wire has a resistance of
25.0Ω
at
20oC
and a resistance of
25.1Ω
at 35
oC
What is its temperature coefficient of of resistance?

a) 4.5×10−4/oC

b) 3.5×10−3/oC

c) 2.6×10−4/oC

d) 4.0×10−5/oC

10) A copper wire has resistance of
2.0Ω
at
0oC
and
2.26Ω
at
30oC
. What is its resistance at
50oC
?

a) 2.43Ω

b) 3.34Ω

c) 1.52Ω

d) 5.31Ω

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