27. Resistors & DC Circuits
Power in Circuits
27. Resistors & DC Circuits Power in Circuits
16PRACTICE PROBLEM
What is the length of a tungsten filament in a halogen lamp that operates at 100.0 V and 75.0 W, given that the filament has a high-temperature resistivity of 9.71 × 10-8 Ωm and a diameter of 5.00 μm?
What is the length of a tungsten filament in a halogen lamp that operates at 100.0 V and 75.0 W, given that the filament has a high-temperature resistivity of 9.71 × 10-8 Ωm and a diameter of 5.00 μm?