What is the resistance of the coil of a boiler if its power, when connected to a 220V network, is 0.8 kW?
| April 10, 2021 | education
These tasks: U (voltage in the network to which the boiler is connected) = 220 V; P (boiler power when connected to the network) = 0.8 kW (800 W).
We express the resistance of the coil of the taken boiler from the formula for calculating the power: P = U ^ 2 / R, whence R = U ^ 2 / P.
Calculation: R = 220 ^ 2/800 = 60.5 ohms.
Answer: The resistance of the coil of the boiler taken is 60.5 ohms.
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