Question

In: Physics

Nichrome wire is used in some radiative heaters. (a) Find the resistance (in Ω) needed if...

Nichrome wire is used in some radiative heaters.

(a) Find the resistance (in Ω) needed if the average power output is to be 1.05 kW utilizing 120 V AC. Ω

(b) What length (in m) of Nichrome wire, having a cross-sectional area of 5.00 mm2, is needed if the operating temperature is 500°C? m

(c) What power (in kW) will it draw when first switched on? kW

Solutions

Expert Solution


Related Solutions

An electric space heater has a Nichrome heating element with a resistance of 6 Ω at...
An electric space heater has a Nichrome heating element with a resistance of 6 Ω at 20°C. When 120 V are applied, the electric current heats the Nichrome wire to 1004°C. The temperature coefficient of resistivity of Nichrome is 4 x 10-4 K-1. (a) What is the initial current drawn by the cold heating element? (b) What is the resistance of the heating element at 1004°C? (c) What is the operating wattage of this heater?
AB is a potentiometer wire of resistance 1 Ω being used to measure a small voltage...
AB is a potentiometer wire of resistance 1 Ω being used to measure a small voltage of 2/3 mV. The cell has an emf of 2 V and negligible internal resistance. For the balance point to be 2/3 (two thirds) of the way along the slidewire, as shown, the value of R in ohms must be:
What is the resistance of a nichrome wire at 0.0 degrees C if its resistance 100.00 ohms at 11.5 degrees C?
a)What is the resistance of a nichrome wire at 0.0 degrees C if its resistance 100.00 ohms at 11.5 degrees C?   (b)What is the resistance of a carbon rod at 25.8 degrees C if its resistance is 0.0160 ohms at 0.0 degrees C?
A circular wire loop of radius r = 0.25 m and resistance R = 11.1 Ω...
A circular wire loop of radius r = 0.25 m and resistance R = 11.1 Ω rotates about a shaft through its diameter at a constant rate of f = 5.8 Hz in a uniform B = 0.49-T magnetic field directed perpendicular to the rotation axis. The plane of the loop is perpendicular to the magnetic field at time t = 0. a) Find the expression for the time-dependent magnetic flux through the loop. Φ = b) Find the value...
The 15 Ω resistance copper wire was cut into 5 equal parts and wound from them....
The 15 Ω resistance copper wire was cut into 5 equal parts and wound from them. Calculate the rope resistance.
The resistance of a very fine aluminum wire with a 10 μm × 10 μm square cross section is 1200 Ω
  1. The resistance of a very fine aluminum wire with a 10 μm × 10 μm square cross section is 1200 Ω . A 1200 Ω resistor is made by wrapping this wire in a spiral around a 3.4-mm-diameter glass core. Part A: How many turns of wire are needed? Express your answer using two significant figures. 2.The starter motor of a car engine draws a current of 180 A from the battery. The copper wire to the motor...
The resistance of a very fine aluminum wire with a 10 μm × 10 μm square cross section is 1200 Ω .
  1. The resistance of a very fine aluminum wire with a 10 μm × 10 μm square cross section is 1200 Ω . A 1200 Ω resistor is made by wrapping this wire in a spiral around a 3.4-mm-diameter glass core. Part A: How many turns of wire are needed? Express your answer using two significant figures. 2. What is the resistance of A 50.0 cm long piece of carbon with a 0.900 mm ×× 0.900 mm square cross...
By doing some library research, see whether you can find the commercial method or methods used...
By doing some library research, see whether you can find the commercial method or methods used to produce absolute ethanol
During the most recent recession, the Fed used some new and expanded tools. Can you find...
During the most recent recession, the Fed used some new and expanded tools. Can you find any articles on these new tools, such as quantitative easing? Was it considered a success?
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT