Question

In a moving coil galvanometer, the magnetic pole pieces are made cylindrical and a soft iron core is placed at the centre of the coil,the purpose for doing so is:

• A. to make the magnetic field strong
• B. to make the magnetic field strong and radial
• C. to make the magnetic field uniform
• D. to make the magnetic field strong and uniform

Answer 1

Answer: (B)

to make the magnetic field strong and radial

In a moving coil galvanometer, the magnetic pole pieces are made cylindrical and a soft iron core is placed at the centre of the coil to make the magnetic field strong and radial.