In activity shown,how do you think the displacKHOent of rod AB will be affected :A stronger horse shoe magnet is used,

In activity shown,how do you think the displacKHOent of rod AB will be affected :if the current in rod ab is increased,

In activity shown,how do you think the displacKHOent of rod AB will be affected :Length of the rod AB is increased

A small aluminium rod AB is suspended horizontally from a stand by the ends of two connecting wires as shown in the Figure given here. A horseshoe magnet is placed in such a way that north pole of the magnet is vertically below and its south pole vertically above the aluminium rod. The aluminium rod is connected in series with a battery, a key and a rheostat. How do you think the displacement of rod AB will be affected if : (i) current in rod AB is increased ? (ii) a stronger horseshoe magnet is used ? (iii) length of the rod AB is increased ?

In figure, how do we think the displacement of rod AB will be affected if (i) current in the rod AB is increased, (ii) a stronger horse-shoe magnet is used, and (iii) length of the rod AB is increased?

How do you test the polarity of a magnet?