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For a heater rated at 4kW and 220V, calc...

For a heater rated at 4kW and 220V, calculate:
(a) the current,
(b) the resistance of the heater,
(c) the energy consumed in 2 hours, and
(d) the cost if 1kWh is priced at Rs 4.60.

Text Solution

Verified by Experts

The correct Answer is:
(a) `18.18 A` (b) `12.1 Omega` (c) 8 kWh (d) Rs 36.80
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LAKHMIR SINGH & MANJIT KAUR-ELECTRICITY -Exercise
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  2. A bulb is rated as 250V, 0.4A. Find its : (i) power and (ii) resistanc...

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  3. For a heater rated at 4kW and 220V, calculate: (a) the current, (b...

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  4. An electric motor takes 5 amperes current from a 220 volt supply line....

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  6. Compare the power used in the 2 Omega resistor in each of the followin...

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  10. What is the maximum power in kilowatts of the appliance that can be co...

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  12. (a) What is meant by "electric power"? Write the formula for electric ...

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  14. The unit for expressing electric power is:

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  15. Which of the following is likely to be the correct wattage for an elec...

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  16. An electric heater is rated at 2 kW. Electrical energy costs Rs 4 per ...

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  17. Unit of energy is SI system is

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  18. Commercial Unit Of Energy

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  19. How much energy does a 100W electric bulb transfer in 1 minute?

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  20. An electric kettle for use on a 230V supply is rated at 300 W. for saf...

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