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What is an ampere-turn?
An ampere-turn is the unit of magnetomotive force, calculated by multiplying the number of turns in a coil by the current flowing through it. It represents the strength of a magnetic field generated by an electric current in a coil.
Why deflection of the magnetic needle placed in a coil carrying current increases as the number of turns in the coil increases?
Deflection of the magnetic needle placed in a coil carrying current increases as the number of turns in the coil increase because as the number of turns in the coil increases the strength of the magnetic field also increases.
What is the difference between an electrical wave and a magnetic wave?
In the general sense, a magnetic circuit is any path taken by magnetic flux. More specifically, it is associated with the magnetic flux within (usually) silicon steel 'cores' such as those found in transformer, generators, motors, relays, etc. They can be 'homogenous', where the flux path is completely contained with the same material (e.g. a transformer core), or 'compound', where the flux path incorporates, say, an air gap (e.g. motor/generator fields).A magnetic circuit can be compared with an electric circuit, where-magnetomotive force (mmf) is equivalent to electromotive force-flux is equivalent to electric current-reluctance is equivalent to resistanceThe source of a magnetic circuit's magnetomotive force is a current-carrying coil. The magnitude of this mmf is the product of the current flowing through the coil, and the number of turns (I x N). Since the number of turns is dimensionless, the SI unit of measurement of mmf is the ampere (A), although it is frequently 'spoken' of as 'ampere turns', to avoid confusion with the unit for electric current.Magnetic flux is measured in webers (Wb), pronounced 'vay-bers'.Reluctance is measured in amperes per weber (A/Wb) although, again, it is frequently spoken as 'ampere-turns per weber'.Another similarity with electric circuits, is that the equivalent of 'Ohm's Law' also applies to magnetic circuits: i.e. flux = mmf / reluctance.Finally, magnetic circuits can also be compared with series, parallel, or series-parallel circuits, but this is beyond the scope of this answer!
How does the number of turns affect the strength?
The number of turns in a coil directly impacts the strength of the magnetic field produced by the coil. More turns create a stronger magnetic field, while fewer turns result in a weaker field. This relationship is a key factor in determining the performance of electromagnets and transformers.
What is the magnetic field equation for a solenoid and how does it relate to the behavior of the magnetic field within the solenoid?
The magnetic field equation for a solenoid is given by B nI, where B is the magnetic field strength, is the permeability of free space, n is the number of turns per unit length, and I is the current flowing through the solenoid. This equation shows that the magnetic field strength inside a solenoid is directly proportional to the current flowing through it and the number of turns per unit length. As a result, increasing the current or the number of turns per unit length will increase the magnetic field strength within the solenoid.
The opposition to magnetic flux as it flows through a magnetic circiut is?
The opposition to the formation (not 'flow') of magnetic flux is the ampere per weber (often spoken as 'ampere-turn per weber'). This is derived from dividing the magnetomotive force produced by a winding, expressed in amperes (often spoken as 'ampere-turns'), divided by the resulting magnetic flux. expressed in webers.
What is the formula for calculating magnetic field?
'Magnetic field strength' (symbol: H) is defined as 'the magnetomotive force, per unit length, of a magnetic circuit'. In SI, it is expressed in amperes per metre (A/m), which is often spoken as "'ampere turns' per metre".It's equation is: H = (IN) / lwhere:H = magnetic field strength (ampere per metre)I = current flowing through coil (amperes)N = number of turns in coill = length of magnetic circuit
Does the number of turns in the electromagnet effect its strength?
Magnetic induction B = mu * n * I Here mu is the magnetic permeability of the core material. n - the number of turns per unit length and I - the current in ampere. So as number of turns increases the magnetic effect too increases
What is an ampere-turn?
An ampere-turn is the unit of magnetomotive force, calculated by multiplying the number of turns in a coil by the current flowing through it. It represents the strength of a magnetic field generated by an electric current in a coil.
Why would 1volt 12amps have a stronger magnetic field than 12volts 1amp please explain?
The strength of a magnetic field is determined by the product of current and number of turns of wire in a coil (ampere-turns). In the case of 1V and 12A, the ampere-turns would be 12, while for 12V and 1A, the ampere-turns would be 12 as well. Hence, both configurations would have similar magnetic field strengths.
What is the product of current in ampere and the number of turns of a coll?
That number is simply labeled with the unit "ampere-turns".
What is reciprocal of inductance?
The quantity of Electrical reluctance (unit = yrnehs H-1 or per henry) was once put forward as the reciprocal of inductance back in the days of the cgs system of units, but the idea never really caught on. While it is sometimes necessary to divide by inductance, there was really no need for a separate named reciprocal quantity or unit.The term reluctance more often referred to magnetic reluctance which saw more use, and was NOT the same as the reciprocal of inductance. Magnetic reluctance is the recipriprocal of permeance, and is normally expressed in ampere-turns/weber or turns/henry (also abampere/abweber or turns/abhenry specifically as electromangnetic units). Magnetic reluctance was a part of the emu(Electromagnetic Units) division of the old cgs system, and was not carried over into the mks system (which replaced cgs) or SI (which is the international standard of today).
How much volts or currents in order to produce one tesla?
There is no straightforward answer to your question. A tesla is the unit of measurement for magnetic flux density, defined in terms of magnetic flux per unit area. Magnetic flux density is determined by the magnetic field strength of the magnetic circuit in question which is expressed in ampere (turns) per metre. Unfortunately, the relationship between magnetic field strength and flux density isn't straightforward, as it depends on the shape of the B/H curve for the magnetic circuit's material. So, as you can see, there are too many unknown variables to give you a straightforward answer.
How do you calculate magnetic flux density?
'Magnetic field strength' (symbol: H) is defined as 'the magnetomotive force, per unit length, of a magnetic circuit'. In SI, it is expressed in amperes per metre (A/m), which is often spoken as "'ampere turns' per metre".It's equation is: H = (IN) / lwhere:H = magnetic field strength (ampere per metre)I = current flowing through coil (amperes)N = number of turns in coill = length of magnetic circuit
Magnetizing force is equal to magnetic force?
'Magnetic Force' (symbol: H), an obsolete term, which has been long replaced by the term, 'Magnetic Field Strength', is defined as the magnetomotive force per unit length of a magnetic circuit. It is measured in amperes per metre(A/m), although this is often spoken as 'ampere turns' per metre. And, no, it is not the same thing as 'magnetic force'.(If you compare a magnetic circuit with an electric circuit, then 'magnetomotive force' is equivalent to 'electromotive force' -and, continuing the analogy, magnetic field strength is equivalent to 'voltage gradient'.)Magnetomotive force is the product of the current flowing through a coil and its number of turns. It's unit is the ampere (A), but is often spoken as 'ampere turn'.So, by way of example, suppose we have a magnetic circuit comprising a steel toroid of circumference 100 mm (0.1 m), around which a coil of 200 turns is uniformly wound. If a current of 0.5 A passes through the coil, then the magnetic field strengthwill be:H = (I N) / circumference = (0.5 x 200) / 0.1 = 1000 A/m
What is motivational force?
mmf is which sets up or tends to set up the magnetic flux in magnetic circuitNote. The term is magnetomotive force, notmagnetic motive force. For a coil, the magnetomotive force is the product of the current flowing in that coil and the number of turns, and is measured in amperes (A), although it is often spoken as 'ampere turns', to avoid any confusion with current.
What determines the strength of the magnetic field when current flows through the conductor?
"If the conductor is wound into a coil the magnetic lines of flux add to produce a stronger magnetic field... Another factor is the amount of current flowing through the wire" (from Delmar's Standard Textbook of Electricity: Fifth Edition, Unit 4 - Magnetism, pages 111-112) The strength of an electromagnet is proportional to its ampere-turns; determined by multiplying the number of turns of wire by the current flow.
