Question

To protect an instrument from external magnetic field, it is put inside an iron box.

• A. True
• B. False

Answer 1

The correct option is A True

True

To protect an instrument from external freed, it is put inside iron box of high permeability.

As the external magnetic field is redirected to the (soft) iron in order to take advantage of high permeability ,permeability is the quality of substance which determines the ease with which it is magnetized . The sensitive elements and instrument are influenced by stray magnetic field. so;iron is used for magnetic shielding of them.