Magnetism Question 250

Question: Which of the following is responsible for the earth’s magnetic field?

Options:

A) convective currents in earth’s core.

B) Diversive current in earth’s core.

C) Rotational motion of earth.

D) Translational motion of earth.

Show Answer

Answer:

Correct Answer: A

Solution:

[a] The earth’s core is hot and molten. Hence, convective current in earth’s core is responsible for it’s magnetic field.