Tungsten filament has a cold resistance of 0.350 ohms. If the temperature increases from 20°C to its typical operating temperature of 2850°C, what will be its operating resistance?
Q: If the 0.185 mm diameter tungsten filament in a light bulb is to have a resistance of 0.103 Ω at…
A: Given data: Diameter (d) = 0.185 mm = 0.185×10-3 m Resistance (R) = 0.103 Ω Resistivity (ρ) =…
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A: Given data, ε=12 Vr=0.4 ohmP=80 Wwe know, P=I2R-------(1)where, I=εR+r-------(2)Putting value of I…
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Q: •21 ILW A common flashlight bulb is rated at 0.30 A and 2.9 V (the values of the current and voltage…
A: Operating resistance of the bulb is R=VI=2.9 V0.3 A=9.67Ω
Q: A certain lightbulb has a tungsten filament with a resistance of 17.8 Ω when at 20.0°C and 147 Ω…
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Q: If the 0.140 mm diameter tungsten filament in a light bulb is to have a resistance of 0.290 Ω at…
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Q: If the 0.100-mm diameter tungsten filament in a light bulb is to have a resistance of 0.200 Ω at…
A: Given - Diameter of tungsten filament ,d = 0.100 mm =0.100 x 10-3 m Resistance of tungsten…
Q: A copper wire has a resistance of 0.505 Ω at 20.0°C, and an iron wire has a resistance of 0.537 Ω at…
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Q: volume of metal a new wire is made that is three times longer than t original wire. What is the…
A: R= 21 Ω let the initial length and area of cross-section of wire be=> l and A let new wire's…
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Q: At 25°C, the resistance of a segment of gold wire is 59 N. When the wire is placed in a liquid bath,…
A: Given, At (T1)= 25°C resistance of wire is (R1)= 59 ohm. When wire placed in liquid bath( having…
Q: nce of 0.49 Ω at 20.0°C, and an iron wire has a resistance of 0.57 Ω at the same temperature. a)…
A: We know that we have given that the A copper wire has a resistance of 0.49 Ω at 20.0°C, and an iron…
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- A copper wire has a resistance of 0.51 Ω at 20.0°C, and an iron wire has a resistance of 0.57 Ω at the same temperature. At what temperature, in degrees Celsius, are their resistances equal? The temperature coefficient of resistivity of copper is 3.9 × 10-3 (°C)-1, while that for iron is 5.0 × 10-3 (°C)-1.A copper wire has a resistance of 0.375 2 at 20.0\deg C, and an iron wire has a resistance of 0.400 at the same temperature. At what temperature (in \deg C) are their resistances equal?At 20 degrees C, a gold wire of length 95 m with a diameter of 1.6 mm is connected across a 15 V dc source. What is the current in the wire? resistivity of gold at 20 degrees C = 2.24 x 10-8 olhm meters, temperature coefficent = 0.0083 1/K
- A platinum resistance thermometer has a resistance R0 = 50 Ω at atemperature To of 20 °C. The temperature coefficient of resistance for theconductor for Pt (α) is 3.92 x 10-3 (°C)-1. The thermometer is immersed in avessel containing molten tin, at which point the resistance increases to 92.8Ω. What is temperature of the liquid tin?If the 0.130 mm diameter tungsten filament in a light bulb is to have a resistance of 0.230 Ω at 20.0°C, how long should it be?What would be the new resistance of a silver wire if the wire passes 500 m? (R = 1.7 Ω) at 30 m?