Physics, asked by khan5868, 1 year ago

A silver wire has resistance of 2.1Ω at 27.5 °C. If temperature coefficient of silver is 3.94 x 10⁻³ / °C, find the silver wire resistance at 100 °C.

Answers

Answered by payalj
1

Given: R1= 2.1

T1=27.5

T2=100

T=T2-T1 =72.5

Teamperature coefficent =3.94*10-³

R2=?

We know

Teamperature coefficent =R2-R1/R1T

R2=(TC) * R1*T/R1

R2= 3.94*10-³ *2.1*72.5/2.1

= 3.94*10-³*72.5

= 1.99

Therfore the silver wier resistance at 100degree celsius is 1.99ohm

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