Question

If the resistance of a conductor is 592 at 50°C and 72 at 100°C then the mean temperature coefficient of resistance of the
material is​

Answer 1

Answer:

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Answer 2

Answer:

ANSWER

We know that R

T

=R

0

(1+αT) where R

T

= resistance at temp T, R

0

= resistance at temp T=0

o

C and α= temperature coefficient of resistance.

Here, 5=R

0

(1+α.50)...(1)

and 7=R

0

(1+α.100)...(2)

(2)/(1)⇒

5

7

=

1+50α

1+100α

7+350α=5+500α

150α=2⇒α=2/150=0.013/

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C