Physics experiments: calculating the efficiency of an electric kettle

Physical experiments. Calculating the efficiency of an electric kettle. Efficiency.
Electric current. Work. Power. Energy. Energy consumption.
Volume of water (accuracy of scaled vessel).
The assumed density of the water (if its mass is calculated from the volume)
The temperature reading of the water (maybe there was a gradient in the vessel)
Does all water reach 100℃ when the kettle is turned off?
Is taking the power of the kettle from the plate sufficient?
Is the power consumed by the kettle constant?
If it is variable, how about connecting the kettle to electricity through a power meter with a function to record the total energy consumed?

[@michaeklechnowski2290]

ale fajowy czajnik

[@tomaszdzierzawa6142]

Dobrze że na koncu jest ta errata bo juz sie chcialem doczepić 😁

[@kurczaczek6330]

Pozdrwiam 2c z LOZP

[@impertynenckimatematyk6600]

Zrób pan jakiś kurs dla maturzystów z fizyki... proszę

[@Lechoslowianin]

Jedyne straty jakie tu mogły wystąpić to na nagrzanie czajnika, ciepło rozproszone oraz wyprodukowanie pewnej ilości pary, która dotarła do wyłącznika bimetalowego w rączce czajnika i go wyłączyła