[" A small cylinderical soft "],[" iron piece is kept in a "],[" galvanometer so that "]

A small cylindrical soft iron piece is kept in a galvanometer so that

A small cylindrical soft iron piece is kept in a galvanometer so that

A small cylindrical soft iron piece is kept in a galvanometer so that

Answer the following why is it necessary to introduce a cylindrical soft iron core inside the coil of a galvanometer ?

Describe the working principle of a moving coil galvanometer. Why is it necessary to use (i) a radial magnetic field and (ii) a cylindrical soft iron core in a galvanometer? Write the expression for current sensitivity of the galvanometer.

Describe the working principle of a moving coil galvanometer. Why is necessary to use (i) a radial magnetic field and (ii) a cylindrical soft iron core in a galvanometer ? Write the expression for current sensitivity of the galvanometer . Can a galvanometer as such be used for measuring the current ? Explain.

Why small soft iron cylinder is placed at the axis of the coil in galvanometer ?