A soft iron when brought close to a magnet is attracted towards it. Name the phenomenon.

An iron bar kept near a magnet gets attracted towards the magnet. However, a silver coin does not.

A metal sphere is suspended from a nylon thread. Initially, the metal sphere is uncharged. When a positively charged glass rod is brought close to the metal sphere, the sphere is drawn towards the rod. But if the sphere touches the rod, it suddenly flies away from the rod. Explain, why the sphere is first attracted then repelled?

A long, straight wire carries a current i . The magnetizing field intensity H is measured at a point P close to the wire. A long, cylindrical iron rod is brought close to the wire so that the point P is at the centre of the rod. The value of H at P will

A: If different ends of two identical looking iron bars are brought closer and they always attract each other then one of the bars is not magnetized. R: Repulsion is the sure check of presence od magnetization of both the bars.

What happens to the crystals of washing soda when exposed to air ? Name the phenomenon exhibited.

Pieces of soft iron used for the storage of magnets

When air is blown In between two balls suspended close to each other they are attracted towards each other why?

An iron piece is converted into a magnet by passing current through a wire wound around it. Name the magnet.

When a negatively charged ebonite rod is brought close to an uncharged electroscope, the leaves of the electroscope develop positive charge and diverge.

A metalic ring is attached with the wall of a room. When the north pole of a magnet is brought near to it, the induced current in the ring will be