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If the resistance of a coil is 2 ohm at 0 degree celcius and a=0.004 degree celcius, then its resistance at 100degree celcius is |
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Answer» Answer: Given, R T =4.2ohm T=100 0 C α=0.004/ 0 C T 0 =0 0 C ΔT=T−T 0 =100−0=100 0 C The RESISTANCE, R T =R 0 (1+αΔT) R 0 = (1+αΔT) R T
R 0 = (1+0.004×100) 4.2 =3Ω The CORRECT option is A. |
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