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Which uses more energy, a 250 W TV set i...

Which uses more energy, a 250 W TV set in 1 hr, or a 1200 W toaster in 10 minutes?

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NCERT TELUGU-ELECTRICITY-EXERCISES
  1. A piece of wire of resistance R is cut into five equal parts. These pa...

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  2. Which of the following terms does not represent electrical power in a ...

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  3. An electric bulb is rated 220 V and 100 W. When it is operated on 110 ...

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  4. Two conducting wires of the same material and of equal lengths and equ...

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  5. How is a voltmeter connected in the circuit to measure the potential d...

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  6. A copper wire has diameter 0.5 mm and resistivity of 1.6 xx 10^(–8) O...

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  7. The values of current I flowing in a given resistor for the correspond...

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  8. When a 12 V battery is connected across an unknown resistor, there is ...

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  9. A battery of 9 V is connected in series with resistors of 0.2 Omega, 0...

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  10. How many 176 Omega resistors (in parallel) are required to carry 5 A o...

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  11. Show how you would connect three resistors, each of resistance 6 Omega...

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  12. Several electric bulbs designed to be used on a 220 V electric supply ...

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  13. A hot plate of an electric oven connected to a 220 V line has two resi...

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  14. Compare the power used in the 2 Omega resistor in each of the followi...

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  15. Two lamps, one rated 100 W at 220 V, and the other 60 W at 220 V, are ...

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  16. Which uses more energy, a 250 W TV set in 1 hr, or a 1200 W toaster in...

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  17. An electric heater of resistance 8 Omega draws 15 A from the service ...

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  18. Explain the following. (a) Why is the tungsten used almost exclusivel...

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