Why is a soft iron core used in a moving coil galvanometer?

In order to produce magnetic field inside the galvanometer device, we can use any magnetic material but soft iron core is especially used in galvanometer because Soft iron is ferromagnetic in nature which in turn strengthen the magnetic field lines, and stronger the magnetic field lines passing through the coil larger …

How is magnetic field made radial in moving coil galvanometer?

To implement the same, the poles of the magnet are cut in a concave shape to make the magnetic field perpendicular to it. The concave nature is easily achieved using a cylindrical magnet. Thus the poles are cylindrically cut to make the magnetic field radial in a moving coil galvanometer.

How does soft iron inside a coil make a magnetic field stronger?

By placing a core inside of a coil the strength of the magnetic field can be increased. By putting a ferrous (iron) core inside a solenoid, the field lines are concentrated. This has the effect of strengthening the field. Inside the core, the field lines are much closer together → stronger field.

Why soft iron is used in moving arm in motor?

instead of air if we place soft iron core inside the coil, the magnetic flux change through the coil will be stronger and the emf hence the current generated subsequently will be stronger in the coil.

Why is magnetic field made radial?

(A) To make field stronger. (B) To make field weaker. Hint: The magnetic field is made radial in a galvanometer to concentrate the field in a circular region uniformly in all directions and hence, make it linear in angular direction.

What do you mean by radial magnetic field why the magnetic field in a moving coil galvanometer is be made radial?

A radial magnetic field is a magnetic field wherein the coil’s plane stays parallel to the magnetic field’s direction in all positions. The radial magnetic field is also parallel to the coil plane of the galvanometer, which creates constant torque regardless of the rotation of the coil.

Is soft iron a magnetic material?

Hint: Soft iron is a special kind of magnetic material which are generally used for making electromagnets because it gets easily magnetised and also loses its magnetism as soon as the inducing field is removed.

What is soft iron used for?

Hint: Soft iron acts as a magnetic core for the electromagnet in case of an electric bell. When current passes through it, it magnetizes and produces a strong magnetic field and also increases its strength.

What does soft iron mean?

noun. iron that has a low carbon content and is easily magnetized and demagnetized with a small hysteresis loss.