PH-1967

Electrical power and energy

Physics · Secondary 4 · Medium · Electrical power and energy

A 240 V electric heater has a power rating of 1.2 kW. It is used for 30 minutes. Using the relationship between power, time and energy, calculate the electrical energy used in kWh.

$0.60\,\text{kWh}$
$0.25\,\text{kWh}$
$1.2\,\text{kWh}$
$2.4\,\text{kWh}$

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