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(a) Draw a circuit diagram showing two l...

(a) Draw a circuit diagram showing two lamps, one cell and a switch connected in series.
(b) How can you change the brightness of the lamps?

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The correct Answer is:
(a) `(##NCERT_PHY_X_C01_E01_197_A01##)`
(b) Connect the lamps in parallel
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LAKHMIR SINGH & MANJIT KAUR-ELECTRICITY -Exercise
  1. The lamps in a household circuit are connected in parallel because: ...

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  2. Using the circuit given below, state which of the following statemet i...

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  3. (a) Draw a circuit diagram showing two lamps, one cell and a switch co...

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

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

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

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

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

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

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  10. COMMERCIAL UNIT OF ENERGY

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

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

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  13. Distinguish between kilowatt and kilowatt hour.

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  14. Name the physical quantity whose unit is watt.

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

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

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

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

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

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

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