How can you use a magnetic field to create a current in a wire?
You use a magnetic field to induce a current in a wire by moving them in relation to each other, or by varying the strength of the magnetic field.
Not true - Moving a wire through a magnetic field does create a current flow in a wire. false
When an electrical current flows through a wire it creates what is called an Electro Magnetic Field. A magnetic field is create when an electric current flows through a wire.
A loop of wire moving through a magnetic field will induce a current in the loop of wire.
by running current through a wire
The magnetic field must be changing relative to the conductor (wire). So the wire could move through the field, or the field could move past the wire, or you could have a changing field (from an electromagnet with varying current).
It creates an induced current and voltage
By itself, it won't. To have an electrical current, you need a voltage. This voltage might be applied externally, or it might be induced by movement of the wire through a magnetic field (or by a changing magnetic field).
If the current in the wire increases, the magnetic field also increases.
Yes, an electric current flowing through a wire will create a magnetic field around the wire. To find the direction of the magnetic field you can use the right hand grip rule.
Move the magnet inside a coil of wire.
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.
An electromagnet uses electricity to create the magnetic field. Moving charges create magnetic fields. Knowing that, if we have a lot of copper wire (with a suitable insulator) wrapped around an iron core, we can send direct current through that wire, and it will create a magnetic field. The magnetic field will magnetize the iron core, and the core becomes a magnet. Wrapping wire around a nail and connecting a battery to the ends of… Read More
Create relative motion between a magnetic field and a loop of wire.
More precisely, this will induce a voltage. If the wire is connected to an external circuit, this can also result in a current.
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.
Magnetism is always created with an electric current. In a straight piece of wire, the magnetic field goes around the wire. If the wire is coiled, a magnetic field is created the same shape as a normal iron magnet.
Which happens to the magnetic field of a wire when you change the direction of the current in the wire The magnetic field?
The magnetic field collapses to zero, then builds up again for the current in the opposite direction.
Hans Christian Ørsted
Any device with an electrical current will create a magnetic field. A tube of wire coils with a current running through it is called a solenoid and it will produce a magnetic field through the inside of the tube, as well as around it... Sorry, not much for physics.
Any electric current does generate a magnetic field, but it might be a very weak magnetic field that you would not notice. In order to create a powerful electromagnet, wire is wrapped around a ferromagnetic core, typically hundreds or thousands of times. Each coil of the wire adds to the magnetic field. But unless the current is extremely strong, a single straight wire produces a magnetic field that's quite weak, but it IS strong enough… Read More
an electromagnet is created by wrapping wire around a core, like iron. Then, by running a current through the wire, you can create an magnetic field.
Passing a wire near a magnetic field induces an electric current in the wire.
yes. If current is flowing through a wire, the magnetic field is around the wire, like your fingers would be around the wire if you gripped it. If the current was alternating (AC) the field would collapse and expand in time with the alternations. One of nature's mysteries - to me anyway.
Yes, for as long as the magnetic field is moving along the conductor. A static magnetic field will not induce current, a dynamic field is required.
Current flows through a wire and produces a magnetic field.
What happens to the magnetic field of a wire when you change the direction of the current of the wire?
In that case, the magnetic field will also be reverted.
You get a magnetic field whenever a current flows through a wire, you get an electromagnetic field whenever the current changes. Run a varing current into a wire of correct length (about a quarter of a wave-length) and you have an antena. (that's the way radios & TVs work)
The magnetic field lines are arranged circularly around the wire.
What describes the production of an electric current by moving a loop of wire through a magnetic field or moving a magnet through a wire loop?
moving a loop of wire through a magnetic Field. The rotation of a coil of copper wire trough a magnetic field changes magnetic field as "seen" from the coil inducing an alternating current.
Any current will produce a magnetic field. If you let a current pass through the wire, you got your magnetic field.Note: If you connect the wire directly to the battery, without any resistance, you'll most likely destroy the battery, due to a short circuit.
Yes, an electric current traveling through a wire generates a magnetic field. There is no way that it cannot do this.
A magnetic field can induce an electrical current in a wire.
If the magnetic field is fluctuating, or the coil of wire and magnetic field are moving with respect to each other, then a current is induced in the coil of wire. If the two are stationary and the magnetic field is stable, then no current is induced in the coil. However, if there is a current in the coil, from another source, then the coil and the field will exhibit a relative force that will… Read More
The movement through a magnetic field will induce a voltage; if there is a closed circuit, that will produce a current. The current, in turn, will have a magnetic field, which will interact with the external magnetic field. The direction of the interaction will be such that energy is conserved, i.e., it will tend to slow the wire down.
the magnetic field gets stronger with increasing distance from the wire
It is not the magnet alone, but the movement of a conductor (wire) in a magnetic field will induce a voltage (and a current, if it is connected in a circuit).
A magnetic field is generated whenever a current is passing through a wire.
In that case, the magnetic field caused by the current would also be reversed. As for the wire itself, it would feel a force in the opposite direction, due to the interaction of the magnetic fields.
increasing the current through the wire
Moving a conductor (a wire) in a magnetic field will create voltage in the wire. Note that relative motion must occur, i.e., the wire must move "across" the magnetic lines of force, and not "along" them to create voltage. Moving a conductor in a magnetic field is the basic idea behind motors and generators.
When a current is passed through coiled wire, the wire will store some of that energy in a magnetic field. As soon as the source of the current is removed, the engergy in the magnetic field will return to the wire.
You can reverse the direction of the magnetic field by reversing the direction of the electrical current.
You can measure with a multimeter. Alternately, you can check for a magnetic field around the wire. You can measure with a multimeter. Alternately, you can check for a magnetic field around the wire. You can measure with a multimeter. Alternately, you can check for a magnetic field around the wire. You can measure with a multimeter. Alternately, you can check for a magnetic field around the wire.
pricinples of electromagnetism state that when current passes through a piece of wire magnetic field is generated around the piece of wire and when a piece of wire passes through the magnetic field current is induced into the piece of wire
What is the difference in the direction of the magnetic field produced around conductor by dc flow and ac flow?
The direction and amplitude of the magnetic field around a wire depend on the direction and amplitude of the current through the wire. When the wire carries DC, the direction and amplitude of the current in the wire are constant, so the direction and amplitude of the magnetic field around the wire are constant. When the wire carries AC, the direction of the current in the wire is periodically reversing and its amplitude typically changes… Read More
the magnetic fields around each coil of wire add together to form a stronger magnetic field inside the coil :)
Only if the wire is running perpendicular to a magnetic field.
An electromagnet normally consists of a wire coil to generate the magnetic field, a ferrous core to improve magnetization, and a voltage source. The coil generates a magnetic field, as a result of the physical properites of an inductor (moving magnetic fields create electric fields, and moving electric fields create magnetic fields, so the moving electrons generate the magnetic field. coiling the wire improves the field) the core improves the inductance of the coil, making… Read More