What are the advantagges of using soft iron as a core, instead of steel, in the coils of galvanometers?

Why is soft iron preferred to steel in making the core of a transformer?

(a) Draw a labellel diagram of a moving coil galvanometer. Describe briefly its principle and working. (b) Answer the following: (i) Why is it necessary to introduce a cyclindrical soft iron core inside the coil of a galvanometer? (ii) Increasing the current sensitivity of galvanometer may not necessarily increase its voltage sensitivity. Explain, giving reason.

Pieces of soft iron used for the storage of magnets

What is the function of the radial magnetic field in the moving coil galvanometer?

In an L-R circuit, if an iron core is inserted inside the coil

A coil and a bulb are connected in series with a dc source, a soft iron core is then inserted in the coil. Then

A coil of insulated copper wire is wound around a piece of soft iron and current is passed in the coil from a battery. What name is given to the device so obtained ? Give one use of the device mentioned by you.

The pole pieces of the magnet used in a pivoted coil galvanometer are

The phosphor bronze strip is used in a moving coil galvanometer because

A tightly-wound, long solenoid having 50 turns cm^(-1) , carris a current of 4.00 A . Find the magnetic intensity H and the magnetic field B at the centre of the solenoid. What will be the values of these quantities if an iron core is inserted in the solenoid and the magnetization I in the core is 4.00 xx 10^6 A m^(-1) ?