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Using the circuit given below, state whi...

Using the circuit given below, state which of the following statemet is correct?

(a) When `S_(1)` and `S_(2)` are closed, lamps A and B are lit.
(b) With `S_(1)` open and `S_(2)` closed, A is lit and B is not lit.
(c) With `S_(2)` open and `S_(1)` closed A and B are lit.
(d) With `S_(1)` closed and `S_(2)` open, lamp A remains lit even if lamp B gets fused.

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The correct Answer is:
c
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LAKHMIR SINGH & MANJIT KAUR-ELECTRICITY -Exercise
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  2. The lamps in a household circuit are connected in parallel because: ...

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

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

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

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

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

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

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

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

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  11. COMMERCIAL UNIT OF ENERGY

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

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

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  14. Distinguish between kilowatt and kilowatt hour.

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  15. Name the physical quantity whose unit is watt.

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

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

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

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

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

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