Temperature of heating wire-toaster uses heating wire

Reference no: EM13564007

A toaster uses a heating wire. When the toaster is turned on at 20 degree C, the initial current is 1.54 A. A few seconds later, the toaster warms up and the current has a value of 1.23 A. The average temperature coefficient of resistivity for this wire is 6.2 times 10-4 (C degree)-1. What is the temperature of the heating wire? Number Units

Reference no: EM13564007

Questions Cloud

What will be the magnification of your microscope : Your task in physics lab is to make a microscope from two lenses.One lens has a focal length of 12 {\rm cm}, the other a focal lengthof 2.5 {\rm cm}. You plan to use the morepowerful lens as the objective, and you want its image tobe 16 {\rm cm} f..

What is the ratio of the masses of the two pieces : An object initially at rest breaks into two pieces as the result of an explosion. One piece has twice the kinetic energy of the oter piece. What is the ratio of the masses of the two pieces? Which piece has the larger mass?

Find at what rate does the entropy of the universe increase : The interior of a house is maintained at 20 degrees Celsius,while the outdoor temperature is -10 degrees Celsius, At what rate does the entropy of the universe increase

Acceleration due to gravity on the surface of the moon : The mass of the moon os 7.3*10^22 kg and its radius is 1.74*10^6m. What is the acceleration due to gravity on the surface of the moon? What is the weight of an astronaut if his mass is 75kg?

Temperature of heating wire-toaster uses heating wire : A toaster uses a heating wire. When the toaster is turned on at 20 degree C, the initial current is 1.54 A. A few seconds later, the toaster warms up and the current has a value of 1.23 A. The average temperature coefficient of resistivity for thi..

Evaluate what is emf of battery : When a light bulb is connected across the terminals of abattery, the battery delivers 24W of power to the bulb. What is emf of battery

What is the total work done on the book by friction : A 0.55 kg book slides on ahorizontal table. The kinetic friction force on the book hasmagnitude 1.8 N. What is the total work done on the book by friction during thecomplete round trip

Two wires are identical, except that one is aluminum : Two wires are identical, except that one is aluminum and one is copper. The aluminum wire has a resistance of 0.874 ohm. What is the resistance of the copper wire? Take the resistivity of copper to be 1.72 times 10-8 ohm m, and that of aluminum to be..

Net electrostatic forceexperienced by any charge : There are four charges, each with a magnitude of 2.0μC. Two are positive and two are negative. The charges are fixedto the corners of a 0.30 m square, one to a corner, in such a waythat the net force on any charge is directed toward the center oft..

User Account

All Pages