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Alternating Current could fit this description in this question.

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Q: What is electric current in which current flows first in one direction and then another?
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Who discovered electromagnetic force?

Hans Orsted first discovered that when an electric current was run through a wire and put close to a compass, the needle moved toward it. Although, he had no idea what that meant. Michael Faraday, built on his work and found that when an electric current runs through a wire, a magnetic field is produced around the wire. He also found that an electric field is around a wire it produces an electric current. The direction of the current depends on which direction the field is going in. The faster you move the electric field the stronger the current.


What are 2 ex. of how electricity and magnetism are interrelated?

First of all, the concepts of both magnetism andelectricity involve fields. An electric field is caused by a point source charge (which is + or - in charge) and is characterized by field lines emanating from the point source charge. Magnetic fields are similar, but are actually caused by charges in motion. Another instance of the interrelatedness between the two phenomena is that the magnetic field is perpendicular to the electric field. Finally, electric fields can cause a current to flow through a wire. As a result of the flow of current, A potential difference is created (voltage) and a magnetic field is formed encircling the length of the wire. The direction of the magnetic field (clockwise or counterclockwise) depends on the direction of current flow.


How can the flow of electric current be started and stopped?

In order to change an electric current, you must first change the conductor, doing so will change the flow of atoms which will change the electrical discharge.


How are electric currents and magnetism related?

Magnetism could be produced due to the flow of electrical current. This was first discovered by Oersted. By changing the magnetic flux linked with a coil electric current could be induced. This was first studied by Michael Faraday. Just due to the orbital motion or spin motion of electron magnetism is produced in tiny form and is known as magnetic dipoles. Such dipoles getting oriented in different form lead to form dia, para and ferro magnetic materials.


What type of magnetic field will produce an electric current in a wire?

A current carrying wire has a magnetic field around it but no electric field.There will be electric field around a body only if it has static electricity.In this wire, charges(electrons) are moving.The number of charges entering is equal to number of charges leaving the conductor.So it remains neutral.A neutral body cannot have an electric field around it. ACTUALLY, there IS also an electric field. A current is made up of moving charges, and all charges (moving or static) create an electric field. Materials that have a neutral charge are not good conductors and therefore would not have a current going through them in the first place.

Related questions

Who discovered electromagnetic force?

Hans Orsted first discovered that when an electric current was run through a wire and put close to a compass, the needle moved toward it. Although, he had no idea what that meant. Michael Faraday, built on his work and found that when an electric current runs through a wire, a magnetic field is produced around the wire. He also found that an electric field is around a wire it produces an electric current. The direction of the current depends on which direction the field is going in. The faster you move the electric field the stronger the current.


Where does electricity get energy?

An electric current HAS energy. The energy comes from whatever caused the electric current to flow in the first place - for example, a generator, or a battery.


What are 2 ex. of how electricity and magnetism are interrelated?

First of all, the concepts of both magnetism andelectricity involve fields. An electric field is caused by a point source charge (which is + or - in charge) and is characterized by field lines emanating from the point source charge. Magnetic fields are similar, but are actually caused by charges in motion. Another instance of the interrelatedness between the two phenomena is that the magnetic field is perpendicular to the electric field. Finally, electric fields can cause a current to flow through a wire. As a result of the flow of current, A potential difference is created (voltage) and a magnetic field is formed encircling the length of the wire. The direction of the magnetic field (clockwise or counterclockwise) depends on the direction of current flow.


How can electric current change?

In order to change an electric current, you must first change the conductor, doing so will change the flow of atoms which will change the electrical discharge.


How can the flow of electric current be started and stopped?

In order to change an electric current, you must first change the conductor, doing so will change the flow of atoms which will change the electrical discharge.


What is the difference between DC and AC?

The primary difference between DC and AC is the direction of current flow. In a DC circuit, all electron current flow is in one direction. In an AC circuit, current flows in one direction for part of the time, and in another direction for another part of the time. In the AC circuit, we'll see current flowing "back and forth" instead of the unidirectional current flow we find in a DC circuit.DC is "Direct Current", and AC is "Alternating Current". In DC, the current flow is in one direction only. In AC, the current flow is constantly changing direction.An example of DC is the output of a battery. An example of AC is the power present in a home electrical system.The current whose magnitude and direction remains change called as alternating current.The current whose magnitude and direction remain unchanged called as d.c. Current.


What is an DC?

* Direct Current = The flow of current in a single direction * District of Columbia, Washington = the capital territory of the United States * DC Shoes = Named after the first initials of Danny Way and that of another pro, Colin McKay [1]


Did Nikola Tesla invent the Electric Motor?

There were electric motors built and patented using direct current. The first commutator-type direct current electric motor capable of turning machinery was invented by the British scientist William Sturgeon in 1832. Another was built Emily and Thomas Davenport and patented in 1837. By 1888 Nikola Tesla built and patented his alternating current motor wich is the one to power homes and builduings today.


How do you make direct current from alternating current?

First, the alternating current is filtered through a rectifier diode, that is, a device that lets the current pass only in one direction. This will produce a current that goes only in one direction, but that pulsates. To smooth this out, i.e., to convert it into a relatively uniform current, capacitors are used as "buffers".


Why direction of rotation is not reversed when both field and armature terminals are reversed?

The direction of the force that drives the machine is determined by the relative directions of the field and the armature current. By reversing the direction of both field and the armature current, the direction of the resulting force stays the same; you have to reverse the direction of one or the other; not both! Prove it for yourself, by applying Fleming's Left-Hand Rule (for conventional current flow); reverse the direction of both your first finger (field) and your second finger (armature current), and you thumb (direction of motion) will end up pointing in the same direction!


Why direction of rotation is not reversed when both field and armature terminal are reversed?

The direction of the force that drives the machine is determined by the relative directions of the field and the armature current. By reversing the direction of both field and the armature current, the direction of the resulting force stays the same; you have to reverse the direction of one or the other; not both! Prove it for yourself, by applying Fleming's Left-Hand Rule (for conventional current flow); reverse the direction of both your first finger (field) and your second finger (armature current), and you thumb (direction of motion) will end up pointing in the same direction!


How is an electric current transferred to the moving parts?

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