Why is it important for life that the earth has a magnetic field?

Q: hen charged particles from space are travelling parallel to the Earth’s magnetic field, what happens…

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Q: How might a loop of wire carrying a current be used as a compass? Could such a compass distinguish…

A: A loop of wire carrying a current I, has a magnetic field B, which can be evaluated from the Biot…

Q: Wearing a silver bracelet in an area with a high magnetic field is risky because of what?

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Q: A proton is traveling west when it enters a magnetic field. It then experiences acceleration to the…

A: According to right hand rule, the direction of magnetic field will be towards west.

Q: What the the similarities between electricity and magnetism? What are their differences?

A: Electric and magnetic forces are two forces found in nature. While initially glance they'll seem…

Q: Why does magnetic materials have finite domains

A: Magnetic materials have finite domains in them where alignment is in same direction.

Q: When you are in the southern hemisphere, does a compass point north or south?

A: The compass needle points magnetic south pole of earth always.The magnetic south pole of earth is…

Q: One way to make a compass is to stick a magnetized needle into a piece of cork and float it in a…

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Bar Magnet

In physics, magnetism is a phenomenon exhibited by a magnetic substance that exerts either attractive or repulsive force. A bar magnet is either a rectangular or round and hollow fit comprised of ferromagnetic materials and has a fanciful attractive field surrounded by it.