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Q: What are 3 ways to change characteristics of a magnetic field by an electric current?
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In an electromagnet as the electric current changes what happens to the magnetic field?

the magnetic field would constantly change, that's why the AC current is converted to DC current


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 does a changing electric field induce?

A changing electric induces changing electric fields:The law of Electromagnetism is Invariance of the Electromagnetic field. The vector or induction portion is "o = dEv/dr + Del Er + DelxEv = dEv/cdt + Del Er + Del x Evthis is the same law as Faraday's law but it includes the Gradient Del Er0= dBv/dt + Del Er + Del xEv


Which happens to the magnetic field of a wire when you change the direction of the current in the wire?

The polarity of the magnetic field of a wire reverses when you change the direction of the current in the wire.


Can a magnet create electricity?

yes, when a copper wire is coiled around it and attached to a battery, an electrical current passes through it. =============================== The above is not the apt answer for the query made. Yes when a magnet is moved through a coil of wire then current is induced in it. This phenomenon is known as electro magnetic induction and current is known as induced current. This is because of change of magnetic flux linked with the coil. So whenever there is a change in magnetic flux linked with a closed circuit then current is induced in the circuit. The current lasts so long as there is change in magnetic flux. Just link of magnetic flux will not induce any current. Only the change of magnetic flux does everything. This is very very important.

Related questions

Does an electric current produces a magnetic field?

yes*edit: don't confuse moving with changing. A change in magnetic field strength/direction will induce an electric current.


Do magnetic effect of electric current causes a change in colour in a solution through which electric current is passed?

i don't believe it does


In an electromagnet as the electric current changes what happens to the magnetic field?

the magnetic field would constantly change, that's why the AC current is converted to DC current


Does a moving magnetic field produce an electric current?

yes*edit: don't confuse moving with changing. A change in magnetic field strength/direction will induce an electric current.


What most occur to produce electric current?

Chemical changes, change in magnetic flux linked with a conductor cause the production of electric current.


What is needed for electromagnetic induction?

An electric current is produced by the change in Magnetic flux over timeRead more: How_do_electromagnets_work


What happen to magnetic compass if the current is changed?

If an electric current flows through a wire, it will create a magnetic field. ... a ship or an airplane, it can damage or otherwise change the ship's magnetic compass.


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 is the best way to describe induction?

a) The production of an electric or magnetic state by the proximity (without contact) of an electrified or magnetized body. b) The production of an electric current in a conductor by a change of magnetic field.


Why electric cooling fans rotate in opposite direction if there is a change in current flow?

Cooling fans use electric motors which operate by magnetism. As the direction of the current flow reverse, the magnetic poles reverse and hence the change in direction.


How does magnets produce movement ina current carrying wire?

Faraday's Law states that magnetic fields produce a electric fields and vice versa. Also, Ampere's Law states that a change in magnetic fields w.r.t. time creates current.


What does a changing electric field induce?

A changing electric induces changing electric fields:The law of Electromagnetism is Invariance of the Electromagnetic field. The vector or induction portion is "o = dEv/dr + Del Er + DelxEv = dEv/cdt + Del Er + Del x Evthis is the same law as Faraday's law but it includes the Gradient Del Er0= dBv/dt + Del Er + Del xEv