Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download reversing the current
Document related concepts
Magnetosphere of Jupiter wikipedia , lookup
Neutron magnetic moment wikipedia , lookup
Magnetometer wikipedia , lookup
Magnetic monopole wikipedia , lookup
Magnetosphere of Saturn wikipedia , lookup
Electromotive force wikipedia , lookup
Electromagnetic field wikipedia , lookup
Electromagnetism wikipedia , lookup
Geomagnetic storm wikipedia , lookup
Friction-plate electromagnetic couplings wikipedia , lookup
Van Allen radiation belt wikipedia , lookup
Magnetotactic bacteria wikipedia , lookup
Magnetochemistry wikipedia , lookup
Electric machine wikipedia , lookup
Magnetoreception wikipedia , lookup
Earth's magnetic field wikipedia , lookup
Lorentz force wikipedia , lookup
Alternating current wikipedia , lookup
Magnetotellurics wikipedia , lookup
Magnetohydrodynamics wikipedia , lookup
Ferromagnetism wikipedia , lookup
Electromagnet wikipedia , lookup
Force between magnets wikipedia , lookup
Transcript
What do you need to make an electromagnet? How are the magnetic domains of an unmagnetized material lined up? If you cut a magnet in half, how many north poles and south poles will it have? N S A magnetic field is created by moving ____________. What is alternating current? If current flows through a wire, it can create a______ ______ (two words). How does a generator convert energy? True or False? An electromagnet can be increased by reversing the current. Where is the force around a magnet the strongest? Through what is a magnetic force exerted? Moving a magnet in and out of a coil of wire produces a _______________. How do the coils of a transformer affect the voltage? What does the Earth’s magnetic field interact with during an aurora? With what does a compass needle align itself? True or False? The sun emits charged particles. True or False? Most of the sun’s particles are deflected by Earth’s magnetosphere. True or False? Some of the charged particles from the sun reach Earth’s poles where they contact the atmosphere. How does a magnet affect a compass? How does a transformer change voltage? Why? Compare motors and generators.
