Question

An electric bulb of 1000W is used for 2 hours. How much energy consumed by it(in Kwh)in 30 days​

Answer 1

Explanation:

Energy consumed in 2hr:- 1000

Energy consumed in 2hr:- 1000Energy consumed in 2hrs (in KWh) :- 1000/100

Energy consumed in 2hr:- 1000Energy consumed in 2hrs (in KWh) :- 1000/100 =10KWh

IN 30 days :- 10×30=300KWh

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Answer 2

Solution:-

Since, the bulb is of 1000W,then--

Power of bulb = 1000W

= 1KW

and,

time used,t = 2 hours

Therefore,

Energy = Power × Time

= 1KW × 2 hours

= 2 KWh

= 2 'units'

So,it uses 2 units per day.

Hence,

In 30 days, it consumed the energy of = 30 × 2 units

= 60 units (KWh).