A light bulb is connected to a 120.0-V wall socket. The current in the bulb depends on the time t according to the relation / = (0.838 A) sin [(491 rad/s)t]. (a) What is the frequency of the alternating current? (b) Determine the resistance of the bulb's filament. (c) What is the average power delivered to the light bulb? (a) Number 1 (b) Number Hi (c) Number H. IM Units Units Units ◆ ↑

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Thermocouple

A thermocouple is a temperature measurement device. It includes diverse metal wires which are joined collectively to form a joint. At the same time as the junction is hot or cold, a small voltage is generated inside the measuring thermocouple electrical circuit, which corresponds to the temperature.