26. If the resistance of coil is 3ohm at 20°C and a = 0.004/°C then determine its
resistance at 100°C.
Answers
Answered by
10
Answer:
R = R° (1 + a∆T)
3 = R° (1+a 20)
R°= 300/108
R = R° (1+a 100)
R = 13.88 ohm
Thanks for Reading
Answered by
20
Answer:
R100 = 3.96 Ω
Explanation:
R0 = 3 Ω, T = 1000 C, T0 = 200 C
α = 0.004/ 0 C, RT= ?
RT= R0
(1 + α(T-T0 ))
R100 = 3(1 + 0.004 × 80)
R100 = 3(1 + 0.32)
R100 = 3(1.32)
R100 = 3.96 Ω
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