Why does the Earth have a magnetic field?
What is the reason for existence of Earth's magnetic field?
Why can’t we use earths magnetic field to produce electricity? Can earth’s magnetic field be repelled by a magnet? Could the Earth's magnetic field be used to produce electrical energy? What's the difference between electric field and magnetic field? Can earth's magnetic field be used to produce electricity? What is the magnetic field due to an electromagnet at a point that is not along its axis? What is the relationship between a magnetic field and gravity? What are the effects of earth's magnetic field on the atmosphere? How magnetic field is produced by electric field? Why the magnetic field lines are normal to the surface in case of ferromagnets? What's the difference between a magnetic field and an electromagnetic field? Is it possible to use the earth's magnetic field to produce electricity? What causes electrons and protons to have a magnetic field and what are magnetic fields made of? Is there any connection between gravity and magnetic fields of force? What is the difference between electric and magnetic fields? What is the main difference between magnetic and electric fields? Is there is any relation between magnetic field and gravitational force? How are the magnetic poles of the Earth fixed? Why isn't the force of a magnet limited to the magnet itself, how can it form a field? What is the direction of induced electric field due to changing magnetic field? Does a magnetic field have mass? What is the direction of induced magnetic field due to changing electric field? What is the difference between magnetic flux and magnetic field? What is magnetic? Why does the slowly rotating planet Mercury have a magnetic field if it doesn't have a molten core? Which is stronger, a magnetic field or an electric field? Why are electric and magnetic fields perpendicular in an electromagnetic wave? Is a magnetic field present when a current is not flowing through a conductor? Why is a magnetic field produced when current flows through a conductor? How would the universe be different if the electric and magnetic fields were 45 degrees apart instead of perpendicular to each other?