Determine the resistance of the coil of a 1.5 kW electric kettle if the work is designed for a voltage of 220 V.

Given: P (power of the electric kettle used) = 1.5 kW (1.5 * 10 ^ 3 W); U (voltage for which the electric kettle is designed) = 220 V.

To calculate the resistance of the spiral of the used electric kettle, we use the formula: P = U ^ 2 / R, whence R = U ^ 2 / P.

Let’s calculate: R = 220 ^ 2 / (1.5 * 10 ^ 3) = 32.27 Ohm.

Answer: The coil of the used electric kettle has a resistance of 32.27 ohms.