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Which of the two is used to load heavy i...

Which of the two is used to load heavy iron girders on to a ship-an electromagnet or a permanent magnet ?

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Electromagnet
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LAKHMIR SINGH & MANJIT KAUR-Electric Current And its Effects-EXERCISE
  1. What is the usual name of magnets whose magnetism can be turned on or ...

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  2. Which material is used to make electromagnets and why?

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  3. Which of the two is used to load heavy iron girders on to a ship-an el...

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  4. Can we use a U-shaped permanent magnet in making an electric bell ?

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  5. Write the full form of MCB.

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  6. Fill in the following blanks with suitable words : The conducting pa...

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  7. Longer line in the symbol for cell representsitsterminal.

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  8. Fill in the following blanks with suitable words : The short and thi...

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  9. Fill in the following blanks with suitable words : The combination o...

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  10. Fill in the following blanks with suitable words : When current is s...

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  11. Fill in the following blanks with suitable words : The safety device...

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  12. Fill in the following blanks with suitable words : The magnet made b...

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  13. Fill in the following blanks with suitable words : An electric curre...

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  14. Fill in the following blanks with suitable words : A current-carryin...

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  15. Fill in the following blanks with suitable words : When an electric ...

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  16. What is an electric circuit ? Explain with the help of a diagram.

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  17. Give the names and symbols for any two common electrical components.

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  18. Give the electrical symbols for : a cell

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  19. Give the electrical symbols for : a battery of two cells

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  20. Give the electrical symbols for : a battery of three cells

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