0
Lots of things can change it like a bigger planet right next to earth, a black hole, even humans. Those are the things I can come up with so far, but all I know that it has to be either huge and/or destructive.
If the liquid center of the Earth is charged and rotating, it creates a magnetic field. If the rotating is reversed, for any reason, the magnetic field reverses.
What else can I help you with?
Which change occurs in an electric motor?
Electrical energy is used to create a electromagnet with alternating poles. These alternating poles will cause another magnet with constant poles attached to an armature to turn and create mechanical energy.
Why do some electromagnets repel rather than attract?
SOME Electromagnet like permanent magnets have two poles(north/south). Likewise the rules for SOME Electromagnets are the same as those of a permanent magnet(same poles repel, different poles attract).
Which change will most likely increase the strength of a magnetic field produced by an electromagnet?
Add a battery
Attract vs repel on magnets?
North + North/South + South = RepelNorth + South/South + North = AttractA.An iron pipeB.An aluminum wire carrying currentE.An electromagnet
Why electromagnet is different from a permanent magnet because an electromagnet what?
Mainly in that the electromagnet is NOT permanent. In other words, it can be switched on and off.Another relevant difference is that the electromagnet constantly requires power, at least while it is on.
Which change occurs in an electric motor?
Electrical energy is used to create a electromagnet with alternating poles. These alternating poles will cause another magnet with constant poles attached to an armature to turn and create mechanical energy.
How the poles of an electromagnet can be reversed?
The poles of an electromagnet can be reversed by changing the direction of the current flowing through the coil of wire. By switching the positive and negative terminals of the power source, the magnetic field produced by the electromagnet will also reverse, causing the poles to switch.
Is it possible to use the reverse force of a magnet to make float?
The poles of an electromagnet can change depend inf on the current supplied.
How do electromagnets work in a motor?
The poles of the electromagnet are repelled and attracted to the poles of the field magnet in the motor, causing it to spin a commutator or rotor in the motor. A brush flips the poles to keep the electromagnet spinning and the rotor moving.
What happen to an electromagnet's field if the direction of the current ic reversed?
If the direction of the current in an electromagnet is reversed, the direction of the magnetic field surrounding the electromagnet will also reverse. This change in direction will affect the polarity of the electromagnet, causing its north and south poles to switch.
What are the ends of an electromagnet that are useful called?
The ends of an electromagnet that are useful are called the poles. There are two poles: the North pole and the South pole, which determine the direction of the magnetic field. The poles play a key role in how electromagnets interact with other magnets and magnetic materials.
Generator consisting of a coil that rotates between the poles of an electromagnet?
dynamo
What kind of magnet has its strength and poles set by the manufacturer?
electromagnet
What would happen to electronics magnets etc if the earths magnetic poles changed?
Nothing - The polarity of an electromagnet depends on the direction of current flow and you can effect the same change in orientation to the earth's field by moving the electromagnet rather than the earth's field.
What happens when the electric current is reversed on am electromagnet?
When the electric current is reversed on an electromagnet, the direction of the magnetic field is also reversed. This means that the north and south poles of the electromagnet switch places. This change in polarity can have various effects depending on the application, such as reversing the direction of motion in a motor or changing the direction of attraction or repulsion in a magnetic system.
What cause electromagnet cause motion?
because of the magnetic field.
What is the difference in a common bar magnet and an electromagnet?
The comon bar magnet has two poles, and the electromagnet can be turned on and off also the electromagnet uses electricity to create a magnetic field in the first place. so the difference is normal magnet cant be turned on and off but the electromagnet can. does that answer ur question?
