Question

what do you mean by kwh ? five electric fans of 90 watts each are used for 5 hours. calculate the electrical energy consumed in kwh.​

Answer 1

Answer:

The kilowatt-hour (SI symbol: kW⋅h or kW h; commonly written as kWh) is a unit of energy equal to 3600 kilojoules (3.6 megajoules). The kilowatt-hour is commonly used as a billing unit for energy delivered to consumers by electric utilities.

Answer 2

Answer : 2.4 kWh

Step-by-step explanation :

Since we know that,

1 W = 1/1000 kW

120 W = 120/1000 kW

= 0.12 kW

Such power has been consumed by 5 electric fans,

= 5 × 0.12 kW = 0.6 kW

This energy has been consumed for 4 hours

= 0.6 kW × 4 hrs = 2.4 kWh

So energy consumed = 2.4 kWh

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