Determine the power of the current in the electric kettle connected to the network voltage of 220 V if it is known that its resistance is equal to 700 Ohm.
Task data: U (mains voltage) = 220 V; R (resistance of the kettle in use) = 700 ohms.
To determine the current power in the used electric kettle, we will use the formula: P = U ^ 2 / R.
Let’s calculate: P = 220 ^ 2/700 = 69.14 W.
Answer: The current power in the electric kettle used is 69.14 W.
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