Give reasons for

(a) The divergence or the degree of closeness of the magnetic field lines near the ends of a current carrying straight solenoid indicates a decrease in the strength of magnetic field.

(b) The magnetic field lines that are produced by the solenoid are similar to that of the bar magnet and behave like a bar magnet. One end of it behaves like a magnetic north pole and the other end as magnetic south pole.

(c) A fuse wire works because of its lower melting point which is possible. If a fuse with larger rating is used with an appliance, the fuse wire shall not melt and hence would fail to serve the required purpose.