15 Describe an activity with daigram and observations to demonstrate magnetic field lines formed by
current carrying circular coil.
Answers
Answer:
Magnetic field produced by a current carrying circular coil.
(1) A rectangular cardboard having holes is taken and a circular coil having large number of turns is inserted in the cardboard. The coil should be inserted in the cardboard in such a manner that the coil is normal to the plane of the cardboard.
(2) The ends of the coil are connected in series with a battery, a key and a rheostat.
(3) Then iron filings are sprinkled uniformly on the cardboard.

(4) Now the key is plugged.
(5) On tapping the cardboard gently, the circular magnetic field lines near the current carrying loop are observed. On moving away from the circular loop, the concentric circles representing magnetic field lines become bigger and bigger. At the centre of the circular loop, the magnetic field lines are straight.
Please mark as the Brainliest Answer and give thanks to my all Answers.
