Electrical energy is the energy derived from the movement of electrons through a conductor, typically within a closed circuit. It is a form of energy that results from the existence of charged particles (such as electrons or protons) and their movement.
The unit of electrical energy is the joule (J).
If a device consumes 1 joule of electrical energy, it means that one watt of power has been used for one second. For instance, a 1-watt light bulb turned on for 1 second consumes 1 joule of electrical energy.
| Device | Power (Watts) | Time (Seconds) | Electrical Energy Consumed (Joules) |
|---|---|---|---|
| Laptop | 50 | 3600 | 180,000 |
| Refrigerator | 150 | 86400 | 12,960,000 |
| Washing Machine | 500 | 1800 | 900,000 |
| Electric Heater | 1000 | 60 | 60,000 |
| LED TV | 80 | 7200 | 576,000 |
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