Home
Class 12
PHYSICS
When a long rod of iron magnetised by me...

When a long rod of iron magnetised by means of an electric current, then its length increase. This phenomenon is

A

Magnetostriction

B

Retentivity

C

Coercivity

D

Hysteresis loss

Text Solution

AI Generated Solution

Promotional Banner

Similar Questions

Explore conceptually related problems

When does an elastic metal rod change its length?

When filament current is increased

When a galvanometer is shunted by resistance S, then its current capacity increases n times. If the same galvanometer is shunted by another resistance S', then its current capcity will increase by n' is given by

If as long cylindrical coductor carreis a steady current parallel to its length, then

When a certain weight is suspended from a long uniform wire, its length increases by 1 cm . If the same weight is suspended from another wire of the same material and length but having a diameter half of the first one, the increases in length will be

When a certain weight is suspended from a long uniform wire, its length increases by 1 cm . If the same weight is suspended from another wire of the same material and length but having a diameter half of the first one, the increases in length will be

If the magnetising field on a ferromagnetic material is increased, its permeability is

If the magnetising field on a ferromagnetic material is increased, its permeability is

A long straight wire of circular cross- section carries a current along its length. On the axis inside the wire, it follows that

An iron rod of length L and magnetic moment M is bent in the form of a semicircle. Now its magnetic moment will be