Define the intensity of magnetic field.
An iron bar of length $L$ has magnetic moment $M$. It is bent at the middle of its length such that the two arms make an angle $60^{\circ}$ with each other. The magnetic moment of this new magnet is :
The magnetic field at a point $x $ on the axis of a small bar magnet is equal to the field at a point $ y $ on the equator of the same magnet. The ratio of the distances of $x$ and $y$ from the centre of the magnet is
The small magnets each of magnetic moment $10 \,A-m^2$ are placed end-on position $0.1\,m$ apart from their centres. The force acting between them is....$N$
Which statement is correct
Write the difference between electric field lines and magnetic field lines.