What is the difference between magnetic length and length of a magnet?

What is the difference between an electromagnet and a permanent magnet? How is an electromagnet designed? Stable any two factors on which the strength of an electromagnet depends.

What is the basic differences between magnetic and electric field?

What is the basic difference between magnetic lines of force and electric lines of force?

What is the basic difference between magnetic field and electric field?

What is the basic difference between magnetic field and electric lines of force?

What is the difference between ferromagnetic, pawramagnetic and diamagnetic substances ? Classify the following materials in respect of the magnetic behaviour: Water

What is the difference between ferromagnetic, pawramagnetic and diamagnetic substances ? Classify the following materials in respect of the magnetic behaviour: Aluminium.

What is the difference between ferromagnetic, pawramagnetic and diamagnetic substances ? Classify the following materials in respect of the magnetic behaviour: Mercury