Power is the physical quantity that indicates how much energy is converted by an electrical equipment in a given unit of time.
If a bulb is indicated as 220V, 60 W this means that the bulb turns 60 J of electrical energy into heat and light energy per second.
The power rating of an appliance indicates how much energy it uses per unit of time, measured in watts. A 60 W, 220 V bulb means it consumes 60 joules of energy each second at a voltage of 220 volts. This specification helps you understand how much electricity the bulb will use and in what electrical environment it should operate.
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