Question

Today Question!

An electric bulb of 60 watt is used for 6 hours per day calculate the units of energy consumed in one day by the bulb.

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Answer 1

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Answer:

An electric bulb of 60W what is used for 6 hours per day calculate the unit of energy consumed in 1 day by the bulb. Power = 60 W. = 0.06 KW. Time = 6 h.

Answer 2

Given :

• Power of Electric bulb = 60W
• Time used = 6 hours per day

To Find :

• Find the units of energy consumed in one day by the bulb ?

Solution :

➣ Power of electric bulb = 60W

➣ 1W = 1000kW

➣ 60W = 1000kW/60W

➣ 60W = 100kW/6W

➣ 60W = 0.06kW

Therefore,

• Power of electric bulb is 0.06kW.

Now,

• Energy = Power × Time Taken

➣ Energy = 0.06 kW × 6 h

➣ Energy = 0.36 kWh

➣ Energy = 0.36 'units'

Hence,

• The Energy consumed by the bulb is 0.36 'units'.

Note :

• The unit joule is too small and hence is inconvenient to express large quantities of energy. So we use a bigger unit of energy called kilowatt hour (kWh).