PUMPA - SMART LEARNING

எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

Book Free Demo
  1. Take around \(75\ cm\) long piece of insulated flexible wire and an iron nail of about \(6\ – 10\ cm\) long.
  2. Wind the wire tightly around the nail in the form of a coil.
  3. Connect the free ends of the wire to the terminals of a cell through a switch.
  4. Place some pins on or near the end of the nail.
  5. Now switch on the current and observe.
  6. Switch off the current.
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Experimental set-up
 
What happens?
 
When the current flows through the circuit, the coil behaves like a . Whereas the coil when the current is turned . This type of coil is known as . It is a type in which is produced by an electric current.