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

Draw magnetic field lines around a bar magnet.

Draw magnetic field lines around a bar magnet.

Magnetic moment of a current carrying square loop be M . If it is converted in form of circle and same current is passed through it then find the new magnetic moment.

Magnetic moment of a current carrying square loop be M . If it is converted in form of circle and same current is passed through it then find the new magnetic moment.

When a wire is wound around a soft iron bar, and a current is passed through it, the soft iron bar behaves like a magnet.

A metallic loop is placed in a magnetic field. If a current is passed through it, then

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

A soft iron behaves like a magnet only when the wire around it carries current.

(a) Draw magnetic field lines produced around a current carrying straight conductor passing through a cardboard. Name, state and apply the rule to mark the direction of thers field lines. (b) How will the strength of the magnetic field change when the point where magnetic field is to be determined is moved away from the straight wire carrying constant current? Justify your answer?

It is established that an electric current through a conductor produces a magnetic field arount it . Is there a similar magnetic field produced around a thin beam of moving (i) alpha particles, (ii) neutrons ? Justify your answer in each case .