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What voltage drop is there across 1kW el...

What voltage drop is there across 1kW electric heater, whose resistance when hot is `40Omega`?

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SL ARORA-HEATING EFFECT OF CURRENT-All Questions
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  2. Two heater coils made of the same material are connected in parallel a...

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  3. What voltage drop is there across 1kW electric heater, whose resistanc...

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  4. An electric current of 2.0 A passes through a wire of resistance 25 Om...

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  5. An ammeter reads a current of 30A when it is connected across the term...

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  6. A coil of resistance 100 Omega is connected across a battery of emf 6....

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  7. A 100W and a 500W bulbs are joined in series and connected to the main...

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  9. We have a 30 W, 6 V bulb , which we want to glow by a supply of 120 V ...

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  10. Two electric lamps are rated as 220V. 40 W and 220V,60W. Find the heat...

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  11. In a house having 220 V line , the following appliances are operating ...

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  12. How many 60W bulbs may be safely used on 220V line using a 5A fuse?

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  13. An electric heater consists of 10m long nichrome wire of 2.5xx10^(-6)m...

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  14. The resistances of 20Omega are connected to a source of emf. Calculate...

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  15. A line having a total resistance of 0.2 omega delivers 10 KW at 220 V ...

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  16. A motor operating on 120 V draws a current of 2 A . If the heat is dev...

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  17. A small electric motor is rated 1/8H.P. and is running at 230V supply....

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  18. A 500W electric heater is designed to work with a 200 V line. If the v...

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  19. A 50 W bulb is connected in a 200V line. Determine the current flowing...

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