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Why is parallel arrangement used in domestic wiring? - Science

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Why is parallel arrangement used in domestic wiring?

संक्षेप में उत्तर
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उत्तर

Parallel arrangement is used in domestic wiring because of the following reasons -

  1.  Net resistance of the electric circuit decreases in parallel connection as compared to series connection due to which heat loss is reduced.
  2. Potential difference across each electrical device remains same i.e 220 V due to which all the electrical devices work upto their maximum potential.
  3. Each electrical device can be operated independently.
  4. If one electrical device stops working still other electrical devices continue to work properly. 
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अध्याय 12: Electricity - Short Answer Questions [पृष्ठ ९५]

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एनसीईआरटी एक्झांप्लर Science [English] Class 10
अध्याय 12 Electricity
Short Answer Questions | Q 27. | पृष्ठ ९५

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संबंधित प्रश्न

Compute the heat generated while transferring 96000 coulomb of charge in one hour through a potential difference of 50 V.


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Explain why, tungsten is used for making the filaments of electric bulbs.


Which electric heating device in your home do you think have resistors which control the flow of electricity?


Identify the figure and give its use.


An electric iron of 1100 W is operated for 2 hrs daily. What will be the electrical consumption expenses for that in the month of April? (The electric company charges Rs 5 per unit of energy).


The ‘live’ and the ‘neutral’ wires have potential difference of _______.


Explain the importance/uses of fuse wire.


What does overloading cause?


True or False – If False give the correct answer

The fuse wire does not melts whenever there is overload in the wiring.


Name any two appliances which work under the principle of heating effect of current.


Your teacher has shown you the following activity.


Activity: Teacher has wound a long insulated piece of wire around an iron nail in the form of a coil. Free ends of the wire are connected to a cell through a switch as shown in the following figure. The current is switched on and some pins are placed near the ends of the nail.

Write down any three questions that come to your mind about this activity.


An electric fuse has a body made of ceramic and two points for connecting the fuse wire.


Name a few appliances which work on the basis of the heating effect of current.


A student boils water in an electric kettle for 20 minutes. Using the same mains supply he wants to reduce the boiling time of water. To do so should he increase or decrease the length of the heating element? Justify your answer.


Tara, after completing her exams, went to her grandmother's house along with her younger brother Rahul. One day, Rahul came home after playing and switched on the fan and air conditioner. At the same time, his grandmother was preparing a milkshake for him using a mixer. Suddenly, they heard a big sound and the electricity of the house got shut down. Tara is called an electrician. He said the main reason for supply to shut down was overloading.

  1. What is overloading?
  2. Is overloading and short the same? When does short-circuiting take place?
  3. How can the effects of overloading be avoided?

Find the odd one out.


An electric kettle of 2 kW is used for 2h. Calculate the energy consumed in 

  1. kilowatt hour and
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The graph of voltage vs current for four different materials is shown below.

Which of these four materials would be used for making filament of bulb?


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