Question

Choose the correct option:

Intensity of the magnetic field of the earth at the point inside a hollow iron box is ______.

Options

• Less than that outside

• More than that outside

• Same as that outside

• Zero

Answer 1

Intensity of the magnetic field of the earth at the point inside a hollow iron box is zero.

Explanation: 

Because the intensity of the magnetic field inside a hollow iron box is zero. Even iron is a ferromagnetic material but it only attracts the magnetic field in the material, not in any hollow part.