Question

What is the commercial unit of energy( electric ) . How many joules are there 1KWh .It a 1200 W electric iron is used daily for 30minutes , how much total electricity is consumed in the month of April

Answer 1

Answer:

•The commercial unit of electrical energy is

kilo watt hour (kWh).

•1 kWh can be converted to joule as:

1 kWh=3.6 × 10^6 J

•Given that,

Power = 1200W

= 1.2kWh

Time = 30 min / day × 30 days

=0.5h×30= 15 h

Energy =Power×Time

=1.2×15

= 18kWh.

Explanation:

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