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Do you maybe mean an 'iron core?' If so, an iron core strenghthens the magnetic field significantly. *If the coils are wound closer together the fluxlines are more dense and increase the strength of the field slightly (an iron core strengthens the field by allowing the magnetic field to propagate inside it better than air).
What else can I help you with?
What happens when a wire is looped into a coil?
When you wind a current carrying wire into a coil, it causes the concentration of the magnetic field line to intensify. Depending on which pole of the magnet is in the up position, the wire will move towards or bend away from it.
Strong temporary magnet formed when a current is passed through a coil of wire?
This is called an electromagnet. When a current passes through a coil of wire, a magnetic field is generated around the coil. This magnetic field creates a temporary magnet that can attract or repel other magnetic materials.
What device measures current by using the deflections of an electro magnetic in an external magnetic field is?
The device that measures current by using the deflections of an electromagnet in an external magnetic field is called a galvanometer. It operates on the principle that an electric current passing through a coil of wire generates a magnetic field, which interacts with the external magnetic field, causing the coil to deflect. This deflection is proportional to the amount of current flowing through the coil, allowing for the measurement of electrical current.
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 is a example of converting electrical energy into magnetic energy?
An example of converting electrical energy into magnetic energy is when current flows through a coil of wire, creating a magnetic field around the coil. This is the principle behind electromagnets where the coil becomes magnetized when current passes through it.
How Flux linkage increase or decrease in coil?
Flux linkage in a coil increases when the magnetic field strength or the number of turns in the coil increases, resulting in more magnetic field lines passing through the coil. Conversely, flux linkage decreases if the magnetic field strength weakens or if the coil is moved away from the magnetic field source. Additionally, changes in the orientation of the coil relative to the magnetic field can also affect flux linkage. In summary, the factors that influence flux linkage include magnetic field strength, coil turns, and coil positioning.
How is magnetic field made radial in a moving coil galvanometer?
The magnetic field in a moving coil galvanometer is made radial by surrounding the coil with a cylindrical magnetic core. When current flows through the coil, it creates a magnetic field perpendicular to the coil. This magnetic field interacts with the radial magnetic field of the core, causing a torque on the coil that deflects the pointer.
What is the factors on which the induced EMF in a coil rotating in a uniform magnetic field depends?
The induced EMF in a coil rotating in a uniform magnetic field depends on the strength of the magnetic field, the number of turns in the coil, the area of the coil, the speed of rotation, and the angle between the magnetic field and the plane of the coil.
What is coil linearity?
A variable linearity coil has a coil which is wound around a magnetic core, a permanent magnet for charging a bias magnetic field to the magnetic core, and a magnetic field adjusting coil for adjusting the bias magnetic field. The coil and the magnetic field adjusting coil are respectively disposed horizontally such that an axial line of each of the coils lies perpendicular to lead terminals to which terminal ends of each of the coils are connected. The coil, the magnetic field adjusting coil, and the permanent magnet may be contained in a casing and the terminal ends of each of the coil and the magnetic field adjusting coil are connected to lead terminals which are embedded into the casing
What creates the magnetic field for the electromagnet?
The magnetic field for an electromagnet is created by the flow of electric current through a coil of wire, which generates a magnetic field around the coil.
Energy is a current carrying coil is stored in the form of?
The energy in a current-carrying coil is stored in the form of magnetic energy in the magnetic field produced by the coil. This magnetic energy is a result of the interaction between the current flowing through the coil and the magnetic field it generates.
Which kind of magnet field as long coil of wire?
A long coil of wire generates a magnetic field similar to that of a bar magnet, with field lines running parallel to the coil's axis. This type of magnetic field is known as a solenoidal field and is strongest inside the coil, as the magnetic field lines are tightly packed together.
What measures current by using the deflections of a coil of wire placed in a permanent magnetic field?
A galvanometer measures current by deflecting a coil of wire in a magnetic field. The current flowing through the coil generates a magnetic field that interacts with the permanent magnetic field, causing the coil to deflect. The amount of deflection is proportional to the current strength flowing through the coil.
How do you increase magnetic field?
You can increase a magnetic field by increasing the number of turns in a coil, increasing the current flowing through the coil, or by using a magnetic material with higher magnetic permeability. Placing the coil in a core material that concentrates and strengthens the magnetic field can also increase its strength.
What is the direction of the induced current in a coil when it is exposed to a changing magnetic field?
When a coil is exposed to a changing magnetic field, an induced current is generated in the coil. The direction of this induced current is such that it creates a magnetic field that opposes the change in the original magnetic field. This phenomenon is described by Faraday's law of electromagnetic induction.
Why does an electromagnet produce a magnetic field?
An electromagnet produces a magnetic field because when an electric current flows through a coil of wire, it creates a magnetic field around the wire. This magnetic field is stronger when the current is stronger and when the coil has more turns.
What happens when a coil of wire cuts through a magnetic field?
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 tend to move the coil with respect to the field.
