Tungsten has a temperature coefficient of resistivity of 0.0045 (C°)-1. A tungsten wire is connected to a source of constant voltage via a switch. At the instant the switch is closed, the temperature of the wire is 28 °C, and the initial power delivered to the wire is P0. At what wire temperature will the power that is delivered to the wire be decreased to 1/2 P0?
Tungsten has a temperature coefficient of resistivity of 0.0045 (C°)-1. A tungsten wire is connected to...
1. A parallel-plate capacitor with a capacitance of 2.80×10−92.80×10−9 F has a plate separation of 3.3 mm. What is its plate area? 4. Tungsten has a temperature coefficient of resistivity of 0.0045 (C°)-1. A tungsten wire is connected to a source of constant voltage via a switch. At the instant the switch is closed, the temperature of the wire is 30 °C, and the initial power delivered to the wire is P0. At what wire temperature will the power that...
The temperature coefficient of resistivity for the metal gold is 0.0034 (C°)-1, and for tungsten it is 0.0045 (C°)-1. The resistance of a gold wire increases by 7.2 percent due to an increase in temperature. For the same increase in temperature, what is the percentage increase in the resistance in a tungsten wire?
please do all parts a,b,c,d,e,f and g
A wire is made of Tungsten with resistivity of 5.6 x 10-8 (0.m), length of 120 (m) and circular cross section area, also it has a resistance of 300 (0). What is the radius of the wire? BY What is the conductivity of this wire? We connect two ends of this wire to a battery and a current density of 0.002 (A/m”) start flowing in the circuit, what is the voltage of the...
A tungsten wire has a radius of 0.075 mm . The coefficient of resistivity is 5.6 X 10-8 Ω·m. When 120 Vis applied across the ends of the wire, a current of 1.5 A is produced. How long is the wire?
A cylindrical tungsten wire is 88cm long and has a resistance of 0.12 ohms. Resistivity is 5.6 x 10^-8. The wire is connected between the terminals of 0.50V battery which drives a current through the wire A) what or the radius B) what is the current being driven by battery
Please, no referring. A 100-W lightbulb has a resistance of about 12 Ω when cold (20 ∘C) and
136 Ω when on (hot). Estimate the temperature of the filament when hot
assuming an average temperature coefficient of resistivity
α=0.0045(C)−1.
A cylindrical tungsten filament 15.0 cm long with a diameter of 1.10 mm is to be used in a machine for which the temperature will range from room temperature (20 ∘C) up to 120 ∘C. It will carry a current of 13.5 A at all temperatures ( Resistivity of tungsten at 20 ∘C is 5.25×10−8Ω⋅m , the temperature coefficient of resistivity at 20 ∘Cis 0.0045 ∘C−1 ) Part B What will be its resistance with that field? Express your answer...
A tungsten wire has a radius of 0.090 mm and is heated from 20.0
to 1395 °C. The temperature coefficient of resistivity is
α = 4.5 10-3 (C°)−1. When 120 V is
applied across the ends of the hot wire, a current of 1.2 A is
produced. How long is the wire? Neglect any effects due to thermal
expansion of the wire.
m
A blow-dryer and a vacuum cleaner each operate with a voltage of
120 V. The current rating...
A tungsten wire has a radius of 0.061 mm and is heated from 20.0 to 1335 °C. The temperature coefficient of resistivity is α = 4.5 10-3 (C°)−1. When 240 V is applied across the ends of the hot wire, a current of 1.2 A is produced. How long is the wire? Neglect any effects due to thermal expansion of the wire.
A tungsten wire has a radius of 0.076 mm and is heated from 20.0 to 1305 °C. The temperature coefficient of resistivity is α = 4.5 10-3 (C°)−1. When 120 V is applied across the ends of the hot wire, a current of 1.9 A is produced. How long is the wire? Neglect any effects due to thermal expansion of the wire.