1} which mineral can attract the peices of irn towards it .?

2} how the attacting power of a horse shoe magnet can be increased?

3} where the south pole of a freely suspended magnet points?

4}what is magnetic field , is it scaler or vector.

5}what is the magnetic field inside the solonide?

6} a coil of copper wire is connected to a galvanometre . what would happen if

a} pushed into the coil with its north pole entering first .

b}held at rest inside the coil .

c}pulled out again?

7}explain short circuit and over loading in an electric supply ?

8} why birds do not feel electric shock while sitting on a current carring uninsulated wires ?

9}from which material fuse is made ?