Question

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electric bulb is marked 60 watt 220 volt what does this mean how much energy does it consume if used for 1 hour​

Answer 1

Answer:

Explanation:

A bulb with 60 watt power rating and 220 v voltage rating. Power = voltage * current.

Here if we calculate current taken by bulb is 60/220 which is equal to 0.27 amps.

Energy = power * time

We calculate energy in watt-hours.

This bulb will consume 60 * 1= 60 watt-hours

If we connect this bulb below 220 volt. Then bulb will glow dimmer and as we decrease the voltage, the bulb gets dimmer. And at certain voltage level we can see the element of bulb is glowing as orange. And below that voltage level the bulb will not glow.

If we connect the bulb with the voltage above 220 v. The bulb will get brighter. But after maximum limit, due to overvoltage, the element of bulb will be fused and bulb wil

Never glow again.

Also the change in frequency of input supply voltage reduces the life of bulb.

Hope this helps...