Define pole strength of magnet.

Write the unit of pole strength of magnet.

The unit of pole strength of magnet is ….. (where Q is charge and v is velocity )

Define the intensity of magnetic field.

When one magnet is kept in 0.8 T magnetic field, magnetic force on each its two poles is 0.08 N. Then pole strength of each pole would be ......

Mention two ways to increases the strength of the magnetic field of a current - carrying solenoid .

In which condition is the magnetic force acting on a given current - carrying rod placed in a magnetic field maximum and in which condition would the magnetic force not act on the rod ? (Assume that the current through the rod and the strength of the magnetic field are not changed).

A magnetic needle is hung by an untwisted wire, so that it can rotate freely in the magnetic meridian. In order to keep it in the horizontal position, a weight of 0.1 g is kept or one end of the needle. If the magnetic pole strength of this needle is 10 Am, find the value of the vertical component of the earth's magnetic field. (g= 9.8 ms^(-2) )

State the effect on the strength of the magnetic field produced at a point near a straight conductor if the electric current flowing through it increases .

A current 1 flows along a triangle loop having sides of equal length a. The strength of magnetic field at the centre of the loop is :

The force acting on a north pole of magnet of pole strength 3200 Am and 10 cm away from the south pole of a point bar magnet of pole strength 40 Am is .......... N.