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How do you think the brightness of two l...

How do you think the brightness of two lamps arranged in parallel compares with the brightness of two lamps arranged in series (both arrangements having one cell)?

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The correct Answer is:
The brightness of two lamps arranged in parallel is much more than those arranged in series
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LAKHMIR SINGH & MANJIT KAUR-ELECTRICITY -Exercise
  1. (a) Draw a circuit diagram showing two lamps, one cell and a switch co...

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  2. Consider the circuit given below where A,B and C are three identical l...

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  3. How do you think the brightness of two lamps arranged in parallel comp...

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  4. If current flows through two lamps arranged: (a) in series, (b) in...

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  5. The figure below shows a variable resistor in a dimmer switch. Ho...

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  6. State two factors on which the electrical energy consumed by an electr...

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  7. Which one has a higher electrical resistance: a 100 watt bulb or a 60 ...

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  8. COMMERCIAL UNIT OF ENERGY

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  9. An electric bulb is rated at 220V, 100W. What is its resistance?

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  10. What is the SI unit of (i) electric energy, and (ii) electric power?

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  11. Distinguish between kilowatt and kilowatt hour.

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  12. Name the physical quantity whose unit is watt.

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  13. What is the meaning of the symbol kWh? Which quantity does it represen...

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  14. If the potential difference between the end of a wire of mixed resista...

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  15. An electric lamp is labelled 12V, 36W. This indicates that it should b...

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  16. What current will be taken by a 920 W appliance if the supply voltage ...

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  17. Define watt. Write down an equation linking watts, volts and amperes.

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  18. Define watt-hour. How many joules are equal to 1 watt-hour?

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  19. How much energy is consumed when a current of 5 amperes flows through ...

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  20. An electric bulb is connected to a 220V power supply line. If the bulb...

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