Solution Found!
Using information in Example 20.6, what would the Hall
Chapter 22, Problem 28(choose chapter or problem)
Problem 28PE
Using information in Example 20.6, what would the Hall voltage be if a 2.00-T field is applied across a 10-gauge copper wire (2.588 mm in diameter) carrying a 20.0-A current?
Example 20.6: Calculating Resistance: Hot-Filament Resistance
Although caution must be used in applying ρ = ρ0 (1 + αΔT) and R = R0 (1 + αΔT) for temperature changes greater than 100ºC , for tungsten the equations work reasonably well for very large temperature changes. What, then, is the resistance of the tungsten filament in the previous example if its temperature is increased from room temperature ( 20ºC ) to a typical operating temperature of 2850ºC ?
Questions & Answers
QUESTION:
Problem 28PE
Using information in Example 20.6, what would the Hall voltage be if a 2.00-T field is applied across a 10-gauge copper wire (2.588 mm in diameter) carrying a 20.0-A current?
Example 20.6: Calculating Resistance: Hot-Filament Resistance
Although caution must be used in applying ρ = ρ0 (1 + αΔT) and R = R0 (1 + αΔT) for temperature changes greater than 100ºC , for tungsten the equations work reasonably well for very large temperature changes. What, then, is the resistance of the tungsten filament in the previous example if its temperature is increased from room temperature ( 20ºC ) to a typical operating temperature of 2850ºC ?
ANSWER:
Solution 28PE