PDF chapter test TRY NOW
- Take around \(75\ cm\) long piece of insulated flexible wire and an iron nail of about \(6\ – 10\ cm\) long.
- Wind the wire tightly around the nail in the form of a coil.
- Connect the free ends of the wire to the terminals of a cell through a switch.
- Place some pins on or near the end of the nail.
- Now switch on the current and observe.
- Switch off the current.
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.
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