Since the direction of all four magnetic fields is same, the magnetic field produced by one such coil at the centre is equal to 4B=4(μ0i2√2πl)=√2μ0iπl. It is given that there are n turns in the coil. Therefore, the net magnetic field at the centre of the coils is equal to √2nμ0iπl .
What is magnetic field at the Centre of a circular coil?
Hence the magnetic field at the center of the circular coil is B=μ0i2r . . Note: Field due to a semi-circular coil is just half that of the circular coil.
What is the magnetic field at its center?
The magnetic field strength at the center of a circular loop is given by B=μ0I2R (at center of loop), where R is the radius of the loop. RHR-2 gives the direction of the field about the loop.
What is magnetic field formula?
The pole of a magnet, a current-carrying wire or a moving charged particle in a magnetic field will feel a magnetic force. ... The magnitude of the force on a wire carrying current I with length L in a magnetic field is given by the equation. F=ILBsinθ where θ is the angle between the wire and the magnetic field.
Which electromagnet is the strongest?
Bitter electromagnets have been used to achieve the strongest continuous manmade magnetic fields on earth―up to 45 teslas, as of 2011.
Where is the magnetic field the strongest?
But we know the field inhabits all the space around the magnet. It is strongest at the poles . So, what are magnetic poles? Magnetic poles are opposite ends of a magnet where the magnetic field is strongest.
Can we see magnetic flux lines?
Explanation: No, we cannot see magnetic flux lines as the “lines of magnetic flux” is purely an imaginary concept to understand the magnetic field clearly.
What is current formula?
The current is the ratio of the potential difference and the resistance. It is represented as (I). The current formula is given as I = V/R . The SI unit of current is Ampere (Amp).
What is B and H in magnetic field?
The definition of H is H = B/μ − M , where B is the magnetic flux density, a measure of the actual magnetic field within a material considered as a concentration of magnetic field lines, or flux, per unit cross-sectional area; μ is the magnetic permeability; and M is the magnetization. ...
What is the biggest magnet in the universe?
The “magnetar,” or magnetic neutron star known as Soft Gamma Repeater 1806-20 , is the most powerful known magnetic object in the universe. Only 10 of these unusual objects have been discovered.
How strong is a 1 Tesla magnet?
Measuring Magnetic Strength
One tesla equals 10,000 gauss . Magnometers, gaussmeters or pull-testers are all used to gauge the strength of a magnet.
What material makes the best electromagnet?
Hence, the best material used to make electromagnet is soft iron . So, the correct answer is “Option C”. Note: An electromagnetic is a type of magnet in which there is formation of magnetic fields from the current applied in it. The electromagnets are made up of soft iron, which have low retentivity and low coercivity.
Where is Earth’s magnetic field the weakest?
The intensity of the magnetic field is greatest near the magnetic poles where it is vertical. The intensity of the field is weakest near the equator where it is horizontal .
Where is the strongest magnetic field in a coil?
The strongest external magnetic fields are near the poles . A magnetic north pole will attract the south pole of another magnet, and repel a north pole.
Is nickel magnetic yes or no?
The element Nickel (Ni) is one of the few ferromagnetic metals. Ferromagnetic means they are attracted to magnets and can be magnetized themselves. Most metals aren ‘t magnetic with the exception of iron, nickel, cobalt, gadolinium, neodymium and samarium.
Is it possible to see a magnetic field?
The ability to see Earth’s magnetic field, known as magnetoreception , relies on the presence of specifically the blue wavelength of light. The complex process involves “radical” intermediate molecules which are sensitive to Earth’s magnetic field.
