A tungsten wire has a radius of 0.096 mm and is heated from 20.0 to 1331 °C. The temperature coefficient of resistivity is a = 4.5 x 10 3 (CO)-1. When 150 V is applied across the ends of the hot wire, a current of 2.3 A is produced. How long is the wire? Neglect any effects due to thermal expansion of the wire. Number i Units

A tungsten wire has a radius of 0.093 mm and is heated from 20.0 to 1322 °C. The temperature coefficient of resistivity is a = 4.5 x 10 3 (Cº)-¹. When 110 V is applied across the ends of the hot wire, a current of 2.3 A is produced. How long is the wire? Neglect any effects due to thermal expansion of the wire. Number i 4.408939318 Units m

A tungsten wire has a radius of 0.097 mm and is heated from 20.0 to 1383 oC. The temperature coefficient of resistivity is α = 4.5 x 10-3 (Co)-1. When 120 V is applied across the ends of the hot wire, a current of 1.8 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 0.068 mm and is heated from 20.0 to 1326 oC. The temperature coefficient of resistivity is α = 4.5 × 10-3 (Co)-1. When 110 V is applied across the ends of the hot wire, a current of 2.1 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 0.085 mm and is heated from 20.0 to 1344 °C. The temperature coefficient of resistivity is a = 4.5 x 10 3 (C°) 1. When 100 V is applied across the ends of the hot wire, a current of 1.3 A is produced. How long is the wire? Neglect any effects due to thermal expansion of the wire. Number Units

ostro Imssb1.mutah.edu.jo/r A conductor has a cross-sectional area of 2.3x 10-6 m2 and the number of free electrons per unit volume is 8.5x 1028 electron/m. When the current is 9 A, find the drift speed (in mm/s) of the electrons. Use the charge of the electron to be 1.6x 10-19 C

QUESTION 5 The density of free electrons in gold is 5.9 ×1028 m¯³. If a gold wire with diameter d= 5.0 mm carries a current of 2.3 A, find the drift velocity (in µm/s) of the electrons in the wire. QUESTION 6 A toaster having a Nichrome heating element of initial resistance Ro is switched on at T= 20 °C. The temperature coefficient of Nichrome is 4.5×10¯“ °C¯' amd the operational temperature of the toaster's heating element is 220 °C. The toaster is rated at 0.71 kW at 240 V. Calculate the initial resistance Ro (in 2) of the heating element.

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

A wire is 1.1 m long and 1.2 mm2 in cross-sectional area. It carries a current of 4.8 A when a 2.4 V potential difference is applied between its ends. Calculate the conductivity o of the material of which this wire is made. Number Units

A 14-gauge copper wire has a cross-section area of 2.081 mm². The resistivity of copper at 20 degrees Celsius is 1.7×10^-8 R.m. The temperature coefficient of copper is 3.9×10^-3k^-1. What is the resistance of 100 meters of 14 gauge copper wire at 100 degrees Celsius.