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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.
How electric current generate?
electric current generate so many types one of mechanical energy convert electrical energy by using generator
Direct electric current cannot be used to operate A. Electric motors B. Electric heaters C. Electromagnets D. Transformers?
Direct electric current cannot be used to operate D. Transformers.
Can an electric current generate an electromagnetic wave?
Not a constant electric current but a changing one will generate electromagnetic waves.First: If you have a lone electron, and it is accelerated in any way, it will send off an electromagnetic wave. This is because a changing electric field generates a magnetic field.It is also true that changing magnetic field will generate an electric field. This is the reason that if you have an electric current, which is generating a magnetic field, and you change the current you generate an electromagnetic wave. To generate a continuous sinusoidal electromagnetic wave you continuously change the current sinusoidally.
What are the advantages of electromagnets against normal magnets?
Electromagnets' magnetism can be manipulated. Electromagnets can be magnetised and demagnetised by passing electric current. Therefore they are used in motors- which works when the coil is magnetised by passing an electric current. It is also used for cranes.
What is needed to produce electromagnets?
electric current
Is a flow of electromagnets called an electric current?
Yes this true!
Explain the temporary nature of electromagnets?
Electromagnets have temporary nature because if you take away their electric current, the magnet no longer works.
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.
How electric current generate?
electric current generate so many types one of mechanical energy convert electrical energy by using generator
Direct electric current cannot be used to operate A. Electric motors B. Electric heaters C. Electromagnets D. Transformers?
Direct electric current cannot be used to operate D. Transformers.
Can an electric current generate an electromagnetic wave?
Not a constant electric current but a changing one will generate electromagnetic waves.First: If you have a lone electron, and it is accelerated in any way, it will send off an electromagnetic wave. This is because a changing electric field generates a magnetic field.It is also true that changing magnetic field will generate an electric field. This is the reason that if you have an electric current, which is generating a magnetic field, and you change the current you generate an electromagnetic wave. To generate a continuous sinusoidal electromagnetic wave you continuously change the current sinusoidally.
Do electromagnets Produce Non Renewable Or Renewable Energy?
Electromagnets do not produce energy at all. They require an electric current to make them work so they are consumers of energy.
Can electromagnets be turned off by opening an electric circuit?
True.. Yes, they operate by turning the current on and off
What are the advantages of electromagnets against normal magnets?
Electromagnets' magnetism can be manipulated. Electromagnets can be magnetised and demagnetised by passing electric current. Therefore they are used in motors- which works when the coil is magnetised by passing an electric current. It is also used for cranes.
What does an electromagnet need to generate a magnetic field?
Magnets can be divided into electromagnets and permanent magnets. An electromagnet consists of a iron core surrounded by a coil of wire. When an electric current passes through the wire coil, it will generate a magnetic field, which will be stronger because of the iron core. Iron is not the only material for the core, any ferromagnetic material may be used, some of which are ceramics. If there is no current in the coil, there will be no magnetic field. Have you seen pictures of crane - mounted electromagnets used in scrap yards?
Do radios use magnets?
Yes, they do. You need small electromagnets in the speakers so that you can hear the radio station. The incoming radio signal is converted to an electric current by the aerial, boosted by circuit boards in the radio, then transmitted by the speakers by using the current to vibrate the electromagnets.
