A tungsten filament at 20°C has a resistance of 0.350 Ω. What would the resistance be if the temperature is increased to 2850°C?
given α = 4.5 X 10-3/°C
Answer & explanation
Correct answer: option 2
\(\alpha\) = \(\frac{R-R_{o}}{\theta R_{o}}\)
A tungsten filament at 20°C has a resistance of 0.350 Ω. What would the resistance be if the temperature is increased to 2850°C?
given α = 4.5 X 10-3/°C
Correct answer: option 2
\(\alpha\) = \(\frac{R-R_{o}}{\theta R_{o}}\)