A lamp containing a 100 W light bulb is plugged into the wall (use standard values for electrical outlets in North America) and switched on. The light bulb consists of a single tungsten ($\rho = 5.6 \times 10^{-7} \Omega \text{m}$) filament. a.) What is the resistance of the filament in the bulb? b.) If the (coiled up) filament has a length of 51.60 cm, then what is its cross-sectional area? c.) How much current (rms) is flowing through the filament?
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To determine the current flowing through the filament, we need to consider the power and resistance of the filament. Show more…
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