Question

describe an activity to draw magnetic field lines around a bar magnet from one phone to another

Answer 1

1 take a bar magnet

2 take a magnet needle

3 place the magnetic needle at the north pole and then take it in a circular loop along the magnet and mark the points

Answer 2

Requirements:thick wire, cardboard

Insulate the wire,make a hole in the cardboard

Pass the wire through the hole in the cardboard

Now pass current through the wire by pressing the key

Sprinkle some iron fillings on the cardboard and around the wire

Observation: if magnetic compass is placed near the wire at different position,we get concentric circles

Conclusion: concentric lines represent the magnetic field around the wire