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What is the electromagnet? Draw a circui...

What is the electromagnet? Draw a circuit diagram to show low a soft iron piece can be transformed into an electromagnet.

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The magnetic field produced due to current flowing in a coil or a solenoid can be used to magnetise a material like soft iron temporarily. The insulated copper wire is wrapped on a soft iron piece. When current is passed through the coil using a battery and a key the iron piece behaves like a bar magnet as long as current is being passed. Such a magnet is called an electromagnet.
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VK GLOBAL PUBLICATION-MAGNETIC EFFECTS OF ELECTRIC CURRENT-SHORT ANSWER QUESTIONS-I
  1. Write SI unit of magnetic field. Under what condition does a moving ch...

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  2. What is the electromagnet? Draw a circuit diagram to show low a soft i...

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  3. A magnetic compass shows a deflection when placed near a current-carry...

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  4. What does the divergence of magnetic field lines near the ends of a cu...

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  5. A student performs an experiment to study the magnetic effect of curre...

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  6. How does the strength of the magnetic field at the centre of a circula...

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  7. How is the direction of magnetic field at a point determined?

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  8. What is the direction of magnetic field at the centre of a current- ca...

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  9. Identify the poles of the magnet in the figure (a) and (b) shown below...

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  10. The given magnet is divided into three parts A, B and C. Name the...

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  11. AB is a current-carrying conductor in the plane of the paper as shown ...

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  12. What is electromagnetic induction?

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  13. Write SI unit of magnetic field. Under what condition does a moving ch...

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  14. What is the electromagnet? Draw a circuit diagram to show low a soft i...

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  15. A magnetic compass shows a deflection when placed near a current-carry...

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  16. What does the divergence of magnetic field lines near the ends of a cu...

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  17. A student performs an experiment to study the magnetic effect of curre...

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  18. How does the strength of the magnetic field at the centre of a circula...

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  19. How is the direction of magnetic field at a point determined?

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  20. What is the direction of magnetic field at the centre of a current- ca...

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