8. A heating element using nichrome connected to a230 V supply draws an initial current of 3.2 A whichsettles after a few seconds to a steady value of 2.8 A.What is the steady temperature of the heatingelement if the room temperature is 27.0°C?Temperature coefficient of resistance of nichromeaveraged over the temperature range involved is1.70× 10 °C-1.-4

Answered: Image /qna-images/answer/bdf3e202-2c42-417a-ac94-8ec55f8dd552.jpg

8. A heating element using nichrome connected to a 230 V supply draws an initial current of 3.2 A which settles after a few seconds to a steady value of 2.8 A. What is the steady temperature of t the heating element if the room temperature is 27.0°C? Temperature coefficient of resistance of nichrome averaged over the temperature range involved is 1,70× 10-4 °C-1.

8. A heating element using nichrome connected to a 230 V supply draws an initial current of 3.2 A which settles after a few seconds to a steady value of 2.8 A. What is the steady temperature of t the heating element if the room temperature is 27.0°C? Temperature coefficient of resistance of nichrome averaged over the temperature range involved is 1,70× 10-4 °C-1.

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter28: Current And Resistance

Section: Chapter Questions

Problem 57PQ

See similar textbooks

Similar questions

A heating element using nichrome connected to a 230 V supply draws an initial current of 3.2 A which settles after a few seconds to a steady value of 2.8 A. What is the steady temperature of the heating element if the room temperature is 27.0 °C? Temperature coefficient of resistance of nichrome averaged over the temperature range involved is 1.70 × 10-4 °C-1.
per meter. A Daniel cell of e.m.f. 1.08 V Resistance of potentiometer wire is 10 per meter. A Daniel cell of e.m.f. 1.08 V balances at 216 cm on this potentiometer. Calculate current through the wire. Also calculate balancing length for another cell of e.m.f. 1.5 V on the same potentiometer.
Not a graded question. It is a research hypothesis. 1. A copper ros is 3 m long and 4 mm in diameter. Compute its resistance if the resistivity of the materials is 1.76 × 10-8 ohms-m 2. A piece of number 10 aluminum wire has a diameter of 2.59 mm. How many meters of number 10 aluminum wire is needed to give a resistance of 1 ohms? Aluminum has p of 2.8 × 10-8 ohms-m 3. Compute the resistance of a 190-m wire made of silver having a cross-sectional area of 0.55mm2. Silver has a resistivity of 1.6 × 10-8 ohms-m
3. Use the table of values in SSLM week6, p3. Calculate the resistance of copper wire, 100m length, 1.0mm diameter a. circular cross section (in Ohms). B. Having same resistance in (a), what would be the length of aluminum made, 1.0mm diameter-circular cross section (in m)? b. C. If the copper wire in (a) was replaced by steel material, having the samne length of 100m, what is diameter of a circular cross section wire (in m)?
A thermometer made of Platinum has a resistance of 502 at 20 C, what is the measured temperature (in units of C) when its resistance is 79.2 2. Assume the temperature coefficient of resistivity to be a= 3.92x 10 C Select one: O A. 404.08 O B. 110.58 O C. 639.18 OD. 168.98 O E. 148.98
6. A nichrome wire and an aluminum wire, each with the same initial resistance, have the same change in resistance when heated separately. (Pa= 282x 10 2-m; a= 3.9x10/°C; Paichrom150x10 2-m; adehrom0.40x 10/C.) The ratio of the temperature change of the nichrome wire to the temperature change of the aluminum wire is f the notential difference across
A thermometer made of Platinum has a resistance of 50 N at 20 C, what is the measured temperature (in units of C) when its resistance is 81.8 N. Assume the temperature coefficient of resistivity to be a= 3.92x 10-3 C Select one: O A. 182.24 O B. 417.34 OC. 118.64 OD. 162.24 O E. 652.45
1. A wire 300 m long has a resistance of 1.18 Ω and a cross-sectional area of 14 mm2. Of what material is the wire made? 2. A 50 m long wire with a cross-sectional area of 5.5 mm2 has a resistance of 31 Ω at 0 °C. Calculate the resistivity of the wire at 60 °C if the temperature coefficient of resistance at 0 °C is 0.0003 per °C.
ostro Imssb1.mutah.edu.jo/mod/ A thermometer made of Platinum has a resistance of 50 2 at 20 C, what is the measured temperature (in units of C) when its resistance is 77 N. Assume the temperature coefficient of resistivity to be a= 3.92x 10 C
1. Nichrome is a metal alloy that has a resistivity of 108 X 10Q m. a) What is the resistance of a nichrome wire of length 5.00 m and diameter 1.32 mm? b) If the wire in part (a) above is connected to a cell of emf 1.55 volts and it is found that a current of 365 mA flows, what is the Internal resistance of the cell?
A length of aluminum wire is connected to a precision 10.00-V power supply, and a current of 0.4212 A is precisely measured at 23.5 °C. The wire is placed in a new environment of unknown temperature where the measured current is 0.3758 A. The temperature coefficient of resistivity of aluminum is 0.00429 (°C) -¹ Part A What is the unknown temperature? Express your answer using three significant figures. T= Submit G| ΑΣΦ Request Answer ? °C Review I Constants
1. An unknown alloy is subjected to an electric field of 25 V/m, and has a current density of 1.45X 10 9 A/m2 . What is the metal's resistivity? 2. A copper-nickel alloy called constantan has a resistance of 8.55 X 10 4 m2 at 20.0 °C. What is its resistance if it is subjected to a temperature of 1500.0 °C? Assume that Equation for resistance is applicable at very high temperature change. 3. The temperature dependence of metal makes it possible for it to be used as a resistance thermometer, which involves platinum. Platinum has a resistance of 50.0 N at 20.0 °C. When it is immersed in a melting metal indium, its resistance increases to 7.68 X 10 4 mQ. What is the melting point of indium in Kelvin?