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If the magnetic field is caused only by a current, you can turn the current off.If you have another magnetic field, for example due to a permanent magnet, with a current you can create a magnetic field that counters the first one. But that will only work in certain regions in space; you can't cancel such a magnetic field everywhere in space.
What else can I help you with?
What happen to a electromagnet if you switch the current off?
When we turn of the current in an electromagnet then electromagnet looses its magnetic property,provided the material used inside the current carrying solenoid is soft iron core. If, the material is steel then after the current is turned the magnetism propety still prevails and hence steel becomes a permanent magnet.
How can the magnetic field strength of an electromagnet be reduced?
Either increasing the size of the current (in amps) or the number of turns of wire wrapped around the core will make a stronger magnet. A larger current will make a stronger magnet (up until too much makes the wire melt!). Increasing the voltage forces more current through the electromagnet.
What are two advantages of a electro magnet over natural magnet?
A permanent magnet is always on; there isn't any way to turn it off. An electromagnet can be controlled; you can turn it on or off, or change the amount of magnetism by varying the current passing through the coils.
What is the location on Earth where the strongest magnetic field is found?
The location on Earth where the strongest magnetic field is found is near the South Atlantic Anomaly, which is located off the coast of South America.
When is magnetism lost in an electromagnet?
Magnetism is lost in an electromagnet when the electric current flowing through the coil is turned off or interrupted. This interrupts the magnetic field generated by the coil, causing it to demagnetize.
How can you control the magnetic field of a magnet to turn it on and off?
To control the magnetic field of a magnet and turn it on and off, you can use an electromagnet. By passing an electric current through a coil of wire wrapped around a magnetic material, such as iron, you can create a magnetic field. When the current is turned off, the magnetic field disappears, effectively turning the magnet off.
Electromagnet is a temporary magnet because you can?
turn it off by unplugging the current source.
Why do electro-magnets stop working when you flip the switch?
When you flip the switch to turn off the electromagnet, the flow of electric current stops, which in turn stops the magnetic field from being produced by the coil. The magnetic field is generated by the flow of electric current through the coil, so cutting off the current stops the magnetic field, causing the electromagnet to stop working.
What happens with the energy associated to the magnetic field of a coil with electric current if the electric current is turned off?
The magnetic field or energy associated with the magnetic field will no longer be generated if the current is turned off.
What happend to a electromagnet when you turn it off?
When you turn off an electromagnet, the magnetic field it was producing disappears and the magnetism is lost. This is because an electromagnet relies on the flow of electric current to produce the magnetic field, and when the current is turned off, the magnetism is no longer sustained.
How does turning off the current in a industrial electromagnet affect its magnetic field?
Turning off the current in an industrial electromagnet will cause the magnetic field to weaken and eventually disappear. This is because the magnetic field is created by the flow of current through the coils of the electromagnet, so stopping the current flow stops the generation of the magnetic field.
How can turning off the electric current in an industrial electromagnet affect its magnetic field?
Turning off the electric current in an industrial electromagnet will cause the magnetic field to weaken or disappear as there is no longer a flow of electricity to generate the magnetic field. The strength of the magnetic field is directly related to the amount of current flowing through the electromagnet.
Can electromagnets be turned on and off easily?
Yes.Electromagnets turn on when an electrical current is sent through the wiring wrapped round the iron core. It ceases to be magnetised when the current is turned off.
How do you deactivate an electromagnet?
Electromagnets are energized with an electric current. Turn the power off to stop the current will do the trick.
What happens to the compass needle when current in the wire is switched off?
It will return to pointing North.
How could you turn off a solenoids magnetic field?
only heskey can do this
Is electromagnet a permanent magnet?
No, an electromagnet is not a permanent magnet. It is a magnet that produces a magnetic field when an electric current is passed through it, and the magnetic field disappears when the current is turned off.
