Determine the amperage in the electric kettle connected to the 220 volt network if the resistance of the filament is 390 m.
July 31, 2021 | education|
Given: U (mains voltage when connecting the electric kettle) = 220 V; R (resistance of the filament of the electric kettle taken) = 39 ohms.
We calculate the current strength in the taken electric kettle according to Ohm’s law for the section of the circuit: I = U / R.
Let’s make a calculation: I = 220/39 = 5.64 A.
Answer: The required current strength in the taken electric kettle is 5.64 A.
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