Question

6. In a house, five 100 W electric bulbs are lit for 6 hours,
a 1500 W electric heater is used for 2 hours daily.
a. Calculate the electrical energy consumed in
30 days. b. Calculate the cost if the rate is * 4 per
unit.
​

Answer 1

Answer:

720 Rs

Step-by-step explanation:

No. of 100W bulbs = 5

Energy consumed by 5 bulbs of 100W each for 6 hours a day = 500W x 6 = 3000W

In, Kwh ( Kilowatt hour )

3 kwh ---------- (I)

Energy consumed by heater of 1500W for 2 hours daily = 1500 x 2 = 3000W

In, Kwh ( Kilowatt hour )

3 Kwh ---------. (II)

Now,

Total Energy Consumption = E1 + E2

= 3 Kwh + 3 Kwh

= 6 kwh

This energy is consumed for 30 days, so total energy consumed in 30 days

= 6 x 30

= 180 Kwh

Since, 1 unit = 1 Kwh

So, 180Kwh = 180 units

However, 1 unit = 4 Rs

= 180 x 4

= 720

So, Cost of bill is 720 Rs

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Answer 2

Answer:

(a) 180 KWh . (b) ₹720 .

Step-by-step explanation:

thank you

this is the answer

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