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LAKHMIR SINGH & MANJIT KAUR-Electric Current And its Effects-EXERCISE
- What is the name of a safety device which cuts off the electricity sup...
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- Name the device which is being used increasingly in place of fuse.
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- Which important discovery was made by Oersted ?
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- Name the scientist who discovered the magnetic effect of current.
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- What name is given to the following arrangement ? A coil of insulate...
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- In an electromagnet, which of the two really becomes a magnet : the pi...
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- Name any two devices in which electromagnets are used.
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- What is the common name of the magnet made by using current ?
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- Which of the following material is used for making an electromagnet ? ...
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- Which effect of electric current is utilised in an electric bell ?
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- Name one device which works on the magnetic effect of current.
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- What is the usual name of magnets whose magnetism can be turned on or ...
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- Which material is used to make electromagnets and why?
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- Which of the two is used to load heavy iron girders on to a ship-an el...
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- Can we use a U-shaped permanent magnet in making an electric bell ?
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- Write the full form of MCB.
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- Fill in the following blanks with suitable words : The conducting pa...
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- Longer line in the symbol for cell representsitsterminal.
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- Fill in the following blanks with suitable words : The short and thi...
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- Fill in the following blanks with suitable words : The combination o...
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