If the 0.100 mm diameter tungsten filament in a light bulb is to have a resistance...
If the 0.100 mm diameter tungsten filament in a light bulb is to have a resistance of 0.250 Ω at 20.0°C, how long (in m) should it be?
Homework Answers
Data Given
Diameter d = 0.100 mm so radius r = d/2 = 0.050 mm, Resistance R = 0.250 Ohm, Temperature T = 20.00C
we know that resistivity of tungsten = 5.6 micro Ohm.m at 20.00 C
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If the 0.100 mm diameter tungsten filament in a light bulb is to
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2) A light bulb filament is made of tungsten. It has a cross sectional area of 1.7 X 10+' m' and a length of 0.02 m. What tension force should you apply to the filament to stretch it by the diameter of 1 tungsten atom, which is 2.1 x 10-10 m? The Young's modulus for tungsten is 3.6 x 1011 N/m². (4 points) NOV 10020 - W0 93x pw 20 MacBook Air
10%) 0.0°C Problem 6: Consider that a 0.105 mm diameter tungsten filament in a light bulb needs to have a resistance of 0.25 2 at ムHow long should the filament be in m, assuming the resistivity of tungsten is 560 x 108 Ωm? Grade Sur Deductions Potential
The filament of a 100 W (120 V) light bulb is a tungsten wire 0.035 mm in diameter. At the filament's operating temperature, the resistivity is 5.0 × 10-7 Ω·m Part AHow long is the filament? Express your answer using two significant figures
5. 0/10 points Previous Answers OSCIPhys2016 20.3.P.026. MyN If the 0.150 mm diameter tungsten filament in a light bulb is to have a resistance of 0.100 at 20.0°C, how long (nm) should it be? Xm Additional Materials Reading 6. -/10 points OSColPhys2016 20.3.P.029. My NC (a) To what temperature (°C) must you raise a copper wire, originally at 20.0*, to double its resistance, neglecting any changes in dimensions? (b) Does this happen in household wiring under ordinary arcumstances O Yes...
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