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How much is the potential difference between live and neutral wires? - Science and Technology 1

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प्रश्न

How much is the potential difference between live and neutral wires?

एका वाक्यात उत्तर

उत्तर

The potential difference between live and neutral wires is around 220 V.

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पाठ 4: Effects of electric current - Answer in one sentence.

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संबंधित प्रश्‍न

What do the following symbols mean in circuit diagrams? 


Draw circuit symbols for  

an open switch


Explain the construction and working of the following. Draw a neat diagram and label it.

Electric motor


How does the short circuit form? What is its effect?


Observe the following figure which bulb get fuse?

 


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  1. By which method are the appliances connected?
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  3. Will the current passing through each appliance be the same? Justify your answer.
  4. Why are the domestic appliances connected in this way?
  5. If the T.V. stops working, will the other appliances also stop working? Explain your answer.

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In an electric circuit, a battery and a bulb have been connected and the battery consists of two cells of equal potential difference. If the bulb is not glowing, then which tests will you perform in order to find out the reason for the bulb not glowing?


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With the help of a suitable circuit diagram prove that the reciprocal of the equivalent resistance of a group of resistances joined in parallel is equal to the sum of the reciprocals of the individual resistances. 


What do you understand by the open electric circuit?


How is a voltmeter connected in a circuit?

Explain the following:
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What is the use of earthing wire?


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Higher Order Question

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Draw the symbols of the following circuit components.

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