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5 tubelights each of 40 W are operated b...

5 tubelights each of 40 W are operated by 10 hour. Calculate electrical energy consumed in 'unit'.

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2 unit
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1 unit = …… electric energy .

If bulb of 100 W continued for 10 hour then how much electric energy will be consumed ?

Vishva noticed in a dhaba around 50 bulbs, each of 100 W all were glowing. She calculated the cost of electricity consumed in one hour and told the dhaba owner to reduce the expenses and at the same time save electricity by using CFL bulbs instead of ordinary filament-type bulbs. What would be the cost of electric energy if 50 bulbs, each of 100 W. are used for one hour? 1 unit costs Rs 5.

Vishva noticed in a dhaba around 50 bulbs, each of 100 W all were glowing. She calculated the cost of electricity consumed in one hour and told the dhaba owner to reduce the expenses and at the same time save electricity by using CFL bulbs instead of ordinary filament-type bulbs. What is a CFL?

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In a residence 4 tubelights each of 40W are operated daily for 5 hour and 3 fans each of 120 W are operated daily for 4 hour. What would be the amount of electricity bill at ₹ 5 per unit for the month of September?

What is the commercial unit of electrical energy?

An electric bulb of 60 W is used for 6 h per day. Calculate the 'units' of energy consumed in one day by the bulb.

KUMAR PRAKASHAN-WORK AND ENERGY -QUESTION & ANSWER (ADDITIONAL NUMERICALS FOR PRACTICE)
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  5. A lady pulls a bucket filled with water having mass 10kg from a well 8...

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  8. In a residence 4 tubelights each of 40W are operated daily for 5 hour ...

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  9. A rocket is moving in upward direction with the velocity v, suddenly i...

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  10. Avinash is moving with the velocity 8ms^(-1) against the frictional fo...

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  11. The power of a water pump is 2 kW. How much amount of water can it rai...

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  12. Suppose the weight of a man on the planet A is half than that on the e...

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  13. A ball is falling freely from the height 10 m. On striking the ground ...

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  14. The power of an electric iron is 1200 W. It is used daily for 30 minut...

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  15. The momentam of a light and heavy objects are same. Find the ratio of ...

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  16. Car A of mass 1000 kg moves on a horizontal straight road with speed 3...

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  18. Four men lift a 250 kg box to a height of 1 m and hold it without rais...

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  19. The height of 'Jog fall' in Karnataka state is 250 m high. 2000 ton wa...

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  20. A man works with the constant power 100 W. How much mass of an object ...

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