Physics, asked by akrishnan2043, 11 months ago


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 harsharora111
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 RoshanRv
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

Similar questions